REFERENCES

REFERENCES SECTION C

C1: CENTER OF MASS MOTION

C1-01: CENTER OF MASS MOTION - BARBELL
R. D. Edge, Distinction between center of mass and center of gravity - Oscillation of rod-shaped satellite as an example, AJP 53, 1002-1004 (1985).

C1-02: CENTER OF MASS MOTION - PLUMBER'S HELPER
None.

C1-03: CENTER OF MASS MOTION - CLOWN
None.

C1-04: CENTER OF MASS MOTION - BEAR ON TIGHT ROPE
None.

C1-11: AIR TRACK - CENTER OF MASS PENDULUM
None.

C1-12: AIR TRACK - CENTER OF MASS OF COUPLED GLIDERS
None.

C1-13: AIR TRACK - REDUCED MASS
Information Sheet.

C1-21: AIR TABLE - TOPPLING STICK
A. J. Mallinckrodt, The Incipient Slip of a Tipping Object, AAPT Announcer, December 1988, page 146.
Fredy R. Zypman, Moments to remember - The conditions for equating torque and rate of change of momentum, AJP 58, 41-43 (1990).

C2: KINEMATICS IN ONE AND TWO DIMENSIONS

C2-01: AIR TRACK - CONSTANT VELOCITY AND UNIFORM ACCELERATION
Information Sheet.
Nobuo Naba, Recording of a Glider's Motion Using a Ladder of Light, AJP 42 (409-410 (1974).
Lawrence A. Mink and Charles A. Hughes, Low-cost easily constructed dual-photogate timer, AJP 61, 951-953 (1993).

C2-02: AIR TRACK - DIRECT MEASUREMENT OF ACCELERATION
None.

C2-03: AIR TRACK - UNIFORM ACCELERATION
Letter: Lecture-Room Measurement of the Value of g, AJP 20, 312 (1952).
Edward Kluk and John L. Lopez, Don't Use Airtracks to Measure Gravity Acceleration, TPT 30, 48-54 (1992).

C2-04: FREE FALL WITH PHOTOCELL GATES
Kanwal Singh, Flight of the bagel, TPT 38, 432-433 (2000).

C2-05: FREE FALL- USING FILMLOOPS
Information Sheet.

C2-06: BALL DROP ON ROPE - EQUAL AND UNEQUAL INTERVALS
R. D. Edge, Dropping a String of Marbles, TPT 16, 233, (1978).
Tom Callaway and James Dennis, Listening to Free Fall with the MacRecorder, TPT 32, 88-89 (1994).
Sutton, Demonstration Experiments in Physics, Demonstration M-85. Freely Falling Bodies.
Information sheet.

C2-07: FREE FALL - EQUAL INTERVALS
None.

C2-08: FREE FALL - STROBE PHOTOS
Information Sheet.

C2-09: FREE FALL WITH STROBE
None.

C2-10: CONSTANT VELOCITY - GALILEO'S EXPERIMENT
Frank S. Crawford, Rolling and slipping down Galileo's inclined plane: Rhythms of the spheres, AJP 64, 541-546 (1996).

C2-11: RACING BALLS
Set of sketches for UMD racing Balls demonstration.
Eric Rogers, Brachistochrone and Tautochrone Curves for Rolling Bodies, AJP 14, 249-252 (1946).
Giulio Venezian, Terrestrial Brachistochrone, AJP 34, 701-704 (1966).
T. M. Atanackovic, The brachistochrone for a material point with arbitrary initial velocity, AJP 46, 1274-1275 (1978).
David G. Stork, Problem: Down in the Valley, AJP 51, 132, 174 (1983).
Harry H. Denman, Remarks on brachistochrone - tautochrone problems, AJP 53, 224-227 (1985).
David G. Stork, Ju-xing Yang, and Chris Stover, The unrestrained brachistochrone, AJP 54, 992-997 (1986).
David G. Stork, Making New Problems from Old Ones, TPT 24, 341-345 (1986).
Ju-xing Yang, David G. Stork, and David Galloway, The rolling unrestrained brachistochrone, AJP 55, 844-847 (1987).
David G. Stork, Problem: The unrestrained tachistos, AJP 55 No. 4, 296 (1987).
David G. Stork, Solution to the problem on page 296, AJP 55 No. 4, 376 (1987).
R. D. Edge, The Brachistochrone - or, the longer way round may be the quickest way home, TPT 23, 372-373 (1985).
Art Schmidt and Dan Cieslik, Doing Physics: High Road / Low Road, TPT 27, 293-295 (1989).
Paul Hewitt, Figuring Physics, TPT 27, 640 (1989).
Kevin J. Tillotson, Who Will Win the Race, II, TPT 28, 537-538 (1990).
William J. Leonard and William J. Gerace, The Power of Simple reasoning, TPT 34, 280-283 (1996).
Michael Fowler, Sliding Down a Cycloid, TPT 34, 326 (1996).
Asif Shakur and Andrew Pica, On An Ambiguous Demonstration, TPT 35, 316-317 (1997).
G. E. Hite, Real-World Constraints, TPT 35, 324 (1997).
D. Figueroa, G. Gutierrez, and C. Fehr, Demonstrating the Brachistochrone and Tautochrone, TPT 35, 494-498 (1997).
Andrew DePino, Jr., Easy projectile-motion demonstrator, TPT 37, 266 (1999).
Zheng et al, Does Bead B Always Reach d First?, TPT 33, 376-377 (1995).

C2-21: BALLS DROPPED AND SHOT
Andrew DePino, Jr., Easy projectile-motion demonstrator, TPT 37, 266 (1999).

C2-22: MONKEY AND HUNTER
Hyman R. Cohen, A General Solution of " The Falling Monkey" Problem, TPT 2, 227, ( 1964).
Ralph Vesecky, Solving The Trajectory Problem Without Trigonometry, TPT 8, 263-265, (1970).
Albert A. Bartlett, Harry Clark, and Robert Stoller, Improvements in the "monkey and the hunter" demonstration apparatus, AJP 43, 561-562 (1975).
Chris Zafiratos, Harry Clark, and Robert Stoller, Compressed air launch mechanism for the "monkey and hunter" demonstration, AJP 43, 562 (1975).
Albert A. Bartlett, Gary Fladstol, and Lori Laingor, Accuracy of the "monkey and the hunter" demonstration, AJP 43, 562-563 (1975).
Charles W. Scherr, The Monkey and the Hunter, TPT 17, 184, (1979).
T. M. Kalotas, A. R. Lee, and R. B. Miller, Einstein on Safari, TPT 29, 122-123 (1991).
Yoav Ben-Dov, Why the Dart Always Hits, TPT 31, 526-528 (1993).

C2-23: TRAJECTORY OF BALL - MODEL
R. Dean Ayers, Simple device for representing trajectories, AJP 47(12), 1097-1098 (1980).
Information Sheet.
Jim Patterson, Physical principles versus mathematical rigor, TPT 38, 214 (2000).

C2-24: WATER DROP PARABOLA
Central Scientific Co.,Chicago, Ill. , Water Drop Parabola Demonstrator, CENCO cat no. 076030.
B. F. Griffing and J. R. Priest, Apparatus for Demonstrating the Independence of Components of Motion for a Projectile, AJP 38, 1160-1161 (1970).
H. A. Buckmaster, Ideal ballistic trajectories revisited, AJP 53, 638-641 (1985).
B. Bagchi and Paul Holody, Study of Projectile Motion by Angular Momentum and Torque, TPT 29, 376-377 (1991).
Carey S. Inouye and Eric W. T. Chong, Maximum Range of a Projectile, TPT 30, 168-169 (1992).
Ronald A. Brown, Maximizing the Range of a Projectile, TPT 30, 344-347 (1992).
Denis Donnelly, The parabolic envelope of constant initial speed trajectories, AJP 60, 1149-1150 (1992).
Jeffrey W. Schnick, Projectile Motion Details, TPT 32, 266-269 (1994).
Alexander S. Kondratyev and Willard Sperry, Direct Use of Vectors in Mechanics Problems, TPT 32, 416-418 (1994).
James S. Walker, Projectiles: Are They Coming or Going, TPT 33, 282-284 (1995).
Hui Hu and Jinyun Yu, Another look at projectile motion, TPT 38, 423 (2000).

C2-25: FUNNEL CART
None.

C2-26: FUNNEL CART WITH MASS OVER PULLEY
None.

C2-27: FUNNEL CART ON INCLINED PLANE
Sutton, Demonstration Experiments in Physics, Demonstration M-99. Relativity Car.
Richard M. Sutton, Three Demonstration Experiments on Projectile Motion, AJP 12, 104-105 (1944).
Harry F. Meiners, Physics Demonstration Experiments, Volume 1, Section 7-2.16, page 127.
Fred B. Otto, Modified Ballistic Car Demonstration, AJP 42, 326 (1974).
Robert Prigo and Abel Rosales, More general and interesting versions of the ballistics cart and tunnel demonstration, AJP 44, 783-785 (1976).
Raymond A. Serway, Jim Lehman, and Richard Hall, The Ballistic Cart on an Incline Revisited, TPT 33, 578-580 (1995).

C2-28: TRAJECTORY OF BALL DROPPED BY WALKER
Michael McCloskey, Intuitive Physics, Scientific American Volume 248 # 4, April 1983, pp. 122-130.

C2-29: BALLISTICS CAR
ARBOR SCIENTIFIC

C2-41: VECTOR ADDITION OF VELOCITIES
Jose M. Aguirre, Student Preconceptions about Vector Kinematics, TPT 26, 212-216 (1988).
Alfredo A. Louro, Letter: Are Arrows Vectors? and Similar Problems, TPT 31, 390 (1993).
Robert P. Bauman, Letter, TPT 31, 390-391 (1993).
Paul Hewitt, Figuring physics, TPT 38, 216 (2000).

C2-42: VELOCITY ADDITION WITH FILMLOOP
None.

C2-51: KINEMATICS WITH ULI AND ULTRASONIC RANGER
Universal Lab Interface manuals.
B. Duschesne, C. W. Fischer, and C. G. Gray, Inexpensive and accurate position tracking with an ultrasonic ranging module and a personal computer, AJP 59, 998-1002 (1991).
Ian R. Gatland, Robert Kahlscheuer, and Hicham Menkara, Experiments utilizing an ultrasonic range finder, AJP 60, 451-454 (1992).

C3: FIRST LAW OF MOTION

C3-01: INERTIA - SMALL STEEL BALL
Haym Kruglak and Robert Scherzer, An Applause-Winning Inertia Trick, TPT 33, 284 (1995).

C3-02: INERTIA - TABLECLOTH TRICK
Joseph Perez, The tablecloth pull, TPT 15, 242, (1977).
H. T. Hudson, There's more to it than inertia, TPT 23, 163, (1985).
Haber-Schaim and Dodge, There's More to it than Friction, TPT 29, 56-57, (1991).

C3-03: INERTIA - MASSES HANGING IN SERIES
Sutton, Demonstration Experiments in Physics, Demonstrations M-100. Inertial Reaction and M-101. Breaking a Rope by Inertia.
P. LeCorbeiller, A Classical Experiment Illustrating the Notion of "Jerk," AJP 13, 156-158 (1945).
P. LeCorbeiller, A Classical Experiment Illustrating the Notion of "Jerk," AJP 14, 64-65 (1946).
Frank G. Karioris, Inertia demonstration revisited, AJP 46, 710-713 (1978).
Steven H. Schot, Jerk: The time rate of change of acceleration, AJP 46, 1090-1094 (1978).
Stephen Luzader, Letter: What a Jerk!, TPT 26, 423 (1988).
T. R. Sandin, The Jerk, TPT 28, 36-40 (1990).
Richard E. Berg, Letter: More on the Third Derivative, TPT 28, 199 (1990).
Paul G. Hewitt, Letter, TPT 28, 199 (1990).
Jack M. Wilson, More jerks (letter), TPT 27, 7 (1989).
Morris W. Leen, Jerks and Monopoles: Physical effects of the third derivative, AJP 62, 393 (1994).
H. P. W. Gottlieb, QUESTIONS AND ANSWERS: Question #38. What is the simplest jerk function that gives chaos?, AJP 64, 525 (1996).
Mark A. Heald and George M. Caplan, Which String Breaks?, TPT 34, 504-507 (1996).
Stefan J. Linz, Nonlinear dynamical models and jerky motion, APJ 65, 523-526 (1997).

C3-04: INERTIA - LEAD BRICK AND HAND
Gerald L. Hodgson, Weight Distribution in a Bed of Nails Sandwich, TPT 13, 52, (1975).
Herbert H. Gottlieb, Inertia of a Building Block, TPT 14, 119, (1976).

C3-05: INERTIA - PEN IN BOTTLE
Martin Gardner, Physics Trick of the Month: Bottle, Hoop, and Dime TPT 32, 80 (1994).

C3-06: INERTIA - JENGA
None.

C3-08: ROTATING PLATFORM
Arbor Scientific

C3-11: STRAW AND POTATO
None.

C3-12: PENCIL AND PLYWOOD
Lecture-Demonstration Information Sheet and pencil velocity calculations.

C3-21: INERTIAL MASS CART
Christopher Bracikowski, Doug Bowman, Karen Brown, and Russ Madara, Feeling the Physics of Linear Motion, TPT 36, 242-243 (1998).
Mario Iona, Weightan official definition, TPT 37, 238 (1999).
Roy Bishop, Weightan accurate, up-to-date, laymans definition, TPT 37, 238-239 (1999).
Andrzej Sokolowski, Weighta pictorial view, TPT 37, 240 (1999).
Ronald Brown, Weightdont use the word at all, TPT 37, 241 (1999).

C4: SECOND LAW OF MOTION

C4-01: AIR TRACK - NEWTON'S SECOND LAW
Information Sheet.
B. Saelman, Some Notes on Newton's Second Law of Motion, AJP 25, 584-585 (1957).
James L. Anderson, Newton's first two laws of motion are not definitions, AJP 58, 1192-1195 (1990).

C4-02: AIR TRACK - A=F/M
Letter: Lecture-Room Measurement of the Value of g, AJP 20, 312 (1952).
Edward Kluk and John L. Lopez, Don't Use Airtracks to Measure Gravity Acceleration, TPT 30, 48-54 (1992).
Information Sheet.

C4-03: ACCELERATION BY ITERATED BLOWS
None.

C4-04: F=MA WITH ULI AND FORCE PROBE
Martin S. Tiersten, Force, Momentum Change, and Motion, AJP 37, 82-87 (1969).
Robert A. Morse, Acceleration and Net Force: An Experiment with the Force Probe, TPT 31, 224-226 (1993).

C4-11: ACCELEROMETER - BALL IN WATER
Richard M. Sutton, Some Dynamic Applications of Liquid Manometers, AJP 3, 77-81 (1935).
J. Harris and A. Ahlgren, Apparatus: Lecture Demonstration and Laboratory. Classroom Techniques: Some Simple Experiments and Demonstrations, TPT 4, 314-322 (1966).
H. R. Crane, Problems for Introductory Physics, TPT 7, 371-378 (1969).
Meiners, Physics Demonstration Experiments, Volume 1, Section 8-3.8, page 146.
Earl Coombs, Demonstrating the Difference between Velocity and Acceleration, TPT 28, 546-547 (1990).
D. Easton, Fletcher's trolley - Alive and well, TPT 21, 184 (1983).

C4-12: ACCELEROMETER ON INCLINED PLAN E
Advertisement for R Value's Roach Kill, an antifungal agent to be mixed into the water in the accelerometer.

C4-13: ACCELEROMETER ON ROTATOR
None.

C4-14: AIR TRACK - ACCELEROMETER
Meiners, Physics Demonstration Experiments, Volume 1, Section 8-3.9, page 146.
Advertisement for R Value's Roach Kill, an antifungal agent to be mixed into the water in the accelerometer.

C4-15: HELIUM BALLOON IN ACCELERATED BOX
Meiners, Physics Demonstration Experiments, Volume 1, Section 8-3.9, page 146.
Meiners, Physics Demonstration Experiments, Volume 1, Section 8-3.10, page 147.
Meiners, Physics Demonstration Experiments, Inertial Forces: Demonstration 8-3.2, pages 143-144.
Meiners, Physics Demonstration Experiments, Section 8-3.6, page 145.
Herman Medwin, Heat Does Not Always Rise, AJP 22, 571 (1954).
Julius Sumner Miller, Two Demonstration Devices, AJP 30, 385-386 (1962).
Hans G. Graetzer and P. W. Williams, Behavior of a Helium Balloon in a Car, AJP 31, 302-303 (1963).
J. A. Van den Akker, Extension of Archimedes' Reasoning, AJP 31, 943-944 (1963).
Merle Fisher, An Experience in Observation, TPT 7, 166-167 (1969).
Peter Greenslade, Cartoon: Helium balloon in car, TPT 11, 183 (1973).
C. Pontiggia, A. Marciano, and E. Piano, Gravitational field and accelerated frame: A simple apparatus, AJP 53, 915-916 (1985).
Alan L. Lehman and Thomas A. Lehman, An illustration of buoyancy in the horizontal plane, AJP 56, 1046-1047 (1988).
Vicente M. Aguilella, Antonio Alcaraz, and Patricio Ramirez, Inward "centrifugal" force on a helium-filled balloon: an illustrative experiment, TPT 40, 214-216 (2002).
N. Gauthier, The equivalence principle and the dynamics of an accelerated helium-filled balloon, TPT 40, 474-475 (2002).
Morton Tavel, Reference Frames, TPT 41, 197 (2003).

C4-21: ATWOOD MACHINE
Henry S. Chen, New Atwood's Machine Attachment, AJP 34, 955-957, (1966).
Charles T. P. Wang, The Improved Determination of Acceleration in Atwood's Machine, AJP 41, 917-919 (1973).
N. Tufillaro, A. Nunes, J. Casasayas, Unbounded orbits of a swinging Atwood's Machine, AJP 56, 1117-1120, (1988).
A, A, Bartlett, Down-to-Earth Physics, TPT 27, 416, (1989).
A. A. Bartlett, Update of a Story, TPT 29, 135, (1991).
Lillian C. McDermott, Peter S. Shaffer, and Mark D. Somers, Research as a guide for teaching introductory mechanics: An illustration in the context of the Atwood's machine, AJP 62, 46-55 (1994).
Nicholas B. Tufillaro, Teardrop and heart orbits of a swinging Atwood's machine, AJP 62, 231-233 (1994).
Ana Nunes, Josefina Casasayas, and Nicholas Tufillaro, Periodic orbits of the integrable swinging Atwood's machine, AJP 63, 121-126 (1995).
Information Sheet.
Michael C. LoPresto, Another look at Atwoods machine, TPT 37, 82-83 (1999).
Joseph O. West, The Atwood machine: Two special cases, TPT 37, 83-84 (1999).
Joseph O. West, Corrections to Atwood machine note, TPT 37, 262 (1999).
Gordon O. Johnson, Making Atwoods machine work, TPT 39, 154-158 (2001).
Jose Flores, Guillermo Solovey, and Salvador Gil, Flow of sand and a variable mass Atwood machine, AJP 71, 715-720 (2003).

C4-22: HORIZONTAL ATWOOD MACHINE
Sample Data Sheet.
C. Gregory Hood,Teaching Newton's Second Law - Another Viewpoint, TPT 30, 358-359 (1992).

C4-23: ATWOOD MACHINE WITH HEAVY PULLEY
None.

C4-31: AIR TRACK - THE ACCELERATION OF GRAVITY
Information Sheet.

C4-32: FREE FALL IN VACUUM - GUINEA AND FEATHER
None.

C4-33: FREE FALL IN VACUUM - FEATHER AND BALL
Paul Gluck, Air Resistance on Falling Balls and Balloons, TPT 41, 178-180 (2003).

C4-34: GALILEO'S EXPERIMENT - MASSES IN FREE FALL
V. V. Raman, Where credit is due- The Leaning Tower of Pisa Experiment, TPT 10, 196-197, (1972).
Marcello Z. Maialle and Oscar Hipolito, Acceleration of gravity for the earth model as an ellipsoidal mass with nonuniform density, AJP 64, 434-436 (1996).

C4-41: TERMINAL VELOCITY - BOTTLE IN TUBE
None.

C4-42: TERMINAL VELOCITY - FEATHER
None.

C4-43: TERMINAL VELOCITY - STACKED COFFEE FILTERS
Byron L. Coulter and Carl G. Adler, Can a body pass a body falling through the air?, AJP 47, 841-846 (1979).
Neil M. Shea, Terminal Speed and Atmospheric Density, TPT 31, 176 (1993).
Norman F. Derby, Robert G. Fuller, and Phil W. Gronseth, The Ubiquitous Coffee Filter, TPT 35, 168-171 (1997).
Vasilis Pagonis, David Guerra, Sean Chauduri, Brian Hornbecker, and Nathan Smith, Effects of Air Resistance, TPT 35, 164-168 (1997).
Steven Herbert and Terrence Toepker, Terminal velocity, TPT 37, 96-97 (1999).
Carl Angell and Trond Ekern, Measuring friction on falling muffin cups, TPT 37, 181-182 (1999).
Richard A. Young, Improving the analysis for falling coffee filters, TPT 39, 398-400 (2001).

C4-51: WEIGHTLESSNESS IN FREE FALL - MASS IN BEAKER
Eric M. Rogers, Demonstration experiments, AJP 24, 479 (1956).
W. W. Sleator, The Meaning of W/g, AJP 15, 251-254 (1947).
R. J. Stephenson, Weightlessness of a Freely-Falling Body, AJP 26, 404-405 (1958).
Allen L. King, Weight and Weightlessness, AJP 30, 387 (1962).
H. L. Armstrong and N. K. Sherman, On a Student's Misconception about Gravity and Acceleration, AJP 30, 528 (1962).
Haym Kruglak, Demonstrations of Weightlessness, AJP 30, 929-930 (1962).
Haym Kruglak, Apparatus - Lecture Demonstration and Laboratory: Physical Effexts of Apparent "Weightlessness," TPT 1, 34-35 (1963).
Laurie Eason and Alan J. Friedman, Elevator exhibit, TPT 13, 492-493 (1975).
Robert D. Freeman, Letter: More on Weight, AJP 47, 926 (1979).
R. D. Edge, String and sticky tape experiments: Weightlessness and other ideas, TPT 19, 190(1981).
D. Easton, Weightlessness and free bodies, TPT 21, 521 (1983).
Gordon Aubrecht, Report on the Conference on the Teaching of Modern Physics, TPT 24, 540-546 (1986).
Clyde J. Smith, Weightlessness for Large Classes, TPT 27, 40-41 (1989).
Howard Pearlman, Dennis Stocker, Daniel Gotti, David Urban, Howard Ross, and Thomas Sours, Demonstrating Reduced Gravity, TPT 34, 172-175 (1996).
Maurice Bruce Stewart, Falling and Orbiting, TPT 36, 122-125 (1998).

C4-52: WEIGHTLESSNESS IN FREE FALL - MASS IN CUP ON POLE
I. Bernard Cohen, An Interview With Einstein, Scientific American v.220 #7, 68-73 (July 1955).
A. P. French, Editor, EINSTEIN: A Centenary Volume, International Commission on Physics Education (1979), The equivalence principle demonstrated: THE PROBLEM, by Eric Rogers, p 131; THE SOLUTION, by I. Bernard Cohen, p 132.

C4-53: WEIGHTLESSNESS IN FREE FALL - MASS ON SPRING
J. B. Cashatt, et. al., Weightlessness in free fall, AJP 43(2), 191, (1975).
Larry Jensen, Apparent weight changes in an elevator, TPT 14, 436-439, (1976).
S. K. Chakarvarti, A demonstration on weightlessness, TPT 16, 391, (1978).

C4-54: WEIGHTLESSNESS IN FREE FALL - MAGNET AND KEEPER
None.

C4-61: ACCELERATION ON A SCALE
Richard M. Sutton, Demonstration Experiments in Physics, Demonstration M-114. Acceleration on a Balance.
C. Frank Griffin and Peter N. Henriksen, Physics challenges, TPT 18, 135-136 (1980).

C4-62: DROPPED SLINKY
W. J. Cunningham, The Physics of the Tumbling Spring, AJP 15, 348-352 (1947).
J. G. Fox and J. Mahanty, The Effective Mass of an Oscillating Spring, AJP 38, 98-100 (1970).
S. Y. Mak, The static effectiveness mass of a slinky, AJP 55, 994-997 (1987).
Jeanne Marie Laskas, The Lady behind the SLINKY, Reader's Digest, November 1993.
M. G. Calkin, Motion of a falling spring, AJP 61, 261-264 (1993).
Richard A. Young, Longitudinal standing waves on a vertically suspended slinky, AJP 61, 353-360 (1993).
A. P. French, The Suspended Slinky - A Problem in Static Equilibrium, TPT 32, 244-245 (1994).
Jerome W. Hosken, Letter: A Slinky Error, TPT 32, 327-328 (1994).
A. P. French, Letter: French Responds, TPT 32, 328 (1994).
Ronald Newburgh and George M. Andes, Galileo Redux, or How Do Nonrigid, Extended Bodies Fall?, TPT 33, 586-588 (1995).
Martin Gardner, A slinky problem, TPT 38, 78 (2000).
Mark Graham, Analysis of slinky levitation, TPT 39, 90-91 (2001).
Mikolaj "Mik" Sawicki, Static elingation of a suspended Slinky, TPT 40, 276-278 (2002).

C5: THIRD LAW OF MOTION

C5-01: NEWTON'S THIRD LAW - STATIC DYNAMOMETERS
Bill Konrad, Demonstration to Illustrate Newton's Third Law, Idea Bank Collation, Idea No. 120.
Mario Iona, Misunderstanding the third law, TPT 18, 219, (1980).
John A. McClelland, g-whizz, TPT 38, 150 (2000).
Hans Pfister, The Actio-Reactio apparatus, TPT 40, 342-346 (2002).
Mark J. Hughes, How I misunderstood Newton's third law, TPT 40, 381-382 (2002).
William Lonc, Novel Third-Law Demonstration, TPT 33, 84 (1995).

C5-02: SPRING AND PULLEY PARADOX
Richard M. Sutton, Demonstration Experiments in Physics, Demonstration M-8. Addition of Forces.
George W. Ficken, Jr., and Angelo A. Gousios, A "Universal" mechanics demonstration, TPT 13, 169-170 (1975).
Anton E. Lawson and Warren T. Wollman, Physics Problems and the Process of Self-Regulation, TPT 13, 470-475 (1975).

C5-10: AIR ROCKET
ARBOR SCIENTIFIC

C5-11: AIR TRACK - ACTION-REACTION PAIRS
Thomas D. Phillips, Finding the External Force, AJP 22, 583-585 (1954).
Donald E. Tilley, Dynamical Paradox, AJP 35, 546-547 (1967).
W. Klein and G. Nimtz, Inelastic collision and the motion of the center of mass, AJP 57, 182, (1989).
Ernie McFarland, Newton's Third Law at a Traffic Intersection, TPT 28, 315 (1990).
Kathy Malone and Bob Reiland, Exploring Newton's Third Law, TPT 33, 410-411 (1995).
Information Sheet.
Eric Gettrust, An extraordinary demonstration of Newtons third law, TPT 39, 392-393 (2001).

C5-12: BALLISTIC CANNON CARTS
None.

C5-13: WATER ROCKET
R. Nelson and M. Wilson, Mathematical Analysis of a Model Rocket Trajectory, Part I: The powered phase, TPT 14, 150-161, (1976).
Nelson, Bradshaw, Leinung, Mullen, Mathematical Analysis of a Model Rocket Trajectory, Part II: The coast phase, TPT 14, 287-293, (1976).
Howard S. Seifert, Mark M. Mills and Martin Summerfield, 1. Physics of Rockets: Liquid-Propellant Rockets, AJP 15, 121-140, (1947). 2. Physics of Rockets: Dynamics of Long Range Rockets, AJP 15, 255-272, (1947).
Ralph B. Kennard, Rocket Power, AJP 15, 357, (1947).
S. S. Penner, Radiation from Rocket Flames and Its Effect on Rocket Performance, AJP 16, 475-483, (1948).
Joseph Himpan and Rudolf Reichel, Can We Fly to the Moon?, AJP 17, 251-263, (1949).
S. S. Penner, Quantitative Evaluation of Rocket Propellants, AJP 20, 26-31, (1952).
B. Saelman, Note on the Equation of Motion of a Rocket, AJP 24, 43, (1956).
Albert Wertheimer, Note on the Limiting Velocity of a Rocket When the Mass Ratio Approaches Unity, AJP 25, 385-386, (1957).
G. Leitmann, Optimum Pay-Load-Ratio Relation for Multiple-Stage Rockets, AJP 26, 28-30, (1958).
Robert F. Coutts, Rocket Engine Analog, TPT 7, 407, (1969).
Mervin Brubaker, Measuring the thrust of a model rocket, TPT 12, 488-491, (1974).
Tim C. Ingoldsby, Rocket Sled Demonstration, TPT 13, 435 (1975).
Physics Problems for Physics Teachers: Mechanics Problem, TPT 27, 115-116, (1989).
R. Stephenson, Timely equations of rocket motion and the surprising power of rockets, AJP 57, 322-325 (1989).
Leo H. van den Raadt, Comment on "Timely equations of rocket motion and the surprising power of rockets, [AJP 57, 322-325 (1989)], AJP 59, 1048-1049 (1991).
J. Matolyak and G. Matous, Simple Variable Mass Systems: Newton's Second Law, TPT 28, 328-329, (1990).
Brian R. Page, The Rocket Experiments of Robert H. Goddard, 1911 to 1930, TPT 29, 490-496 (1991).
Randy A. Jenkins, Measuring Model Rocket Acceleration, TPT 31, 10-15 (1993).
A. R. Marlow, The Pedagogy of the Rocket, TPT 33, 124-125 (1995).
Robert H. Gowdy, The physics of perfect rockets, AJP 63, 229-232 (1995).
Darren L. Hitt and Mary L. Lowe, Motion Analysis of a Rocket-Propelled Truck, TPT 34, 164-168 (1996).
Tim C. Ingoldsby, Rocket Sled Demonstration, TPT13, 435 (1975).
Stephen A Widmark, Rocket Physics, TPT 36, 148-153 (1998).
G. A. Finney, Analysis of a water-propelled rocket: A problem in honors physics, AJP 68, 223-224 (2000).
Yee-kong Ng, Se-yuen Mak, and Choi-man Chung, Demonstration of Newton's third law using a balloon helicopter, TPT 40, 181-182 (2002).

C5-14: ROCKET TRIKE
Evan Jones, Spectacular rocket experiment, TPT 14, 112-113, (1976).

C5-15: REACTION FORCE ON AIR BLOWER
None.

C5-16: HERO'S ENGINE
None.

C5-17: ROCKET BOTTLE
David Kagan, Louis Buchholtz, and Lynda Klein, Soda-Bottle Water Rockets, TPT 33, 150-157 (1995).
Martin Nicoll, The Surgical-Hose Rocket, TPT 36, 181-182 (1998).

C5-18: FAN CART
Meiners, Physics Demonstration Experiments, Section 9-4.5, page 195.
Lewis Epstein, A Self-Propelling Mechanism, TPT 8, 332 (1970).
Steven R. Smith and Jerry D. Wilson, A New Design to Demonstrate Newton's Third Law, TPT 10, 208-209 (1972).
Jerry Wilson, Newton's Sailboat, TPT 10, 300 (1972).
Richard S. Murphy and Jack Van Geldren, Letter: A Note from the Real World, TPT 16, 260 (1978).
David L. Mott, Letter: A No-Sail "Boat," TPT 16, 426 (1978).
B. L. Blackford, The physics of a push-me pull-you boat, AJP 46, 1004-1006 (1978).
B. L. Blackford, A push-me pull-you wind vehicle, AJP 49, 282-283 (1981).
A. Rubcic and J. Baturic-Rubcic, A push-me-pull-you water-driven wheeled vehicle, AJP 53, 962-967 (1985). Paul Hewitt, Figuring Physics, TPT 26, 57-58 (1988).
Robert A. Morse, Constant Acceleration: Experiments with a Fan-Driven Dynamics Cart, TPT 31, 436-438 (1993).
Yee-kong Ng, Se-yuen Mak, and Choi-man Chung, Apparatus for Teaching Physics: Demonstration of Newton's Third Law Using a Balloon Helicopter, TPT 40, 181-182 (2002).

C5-19: ACTION AND REACTION - INSTRUCTOR AND CART
None.

C5-20: PUTT PUTT STEAM BOAT
H. Richard Crane, The Pop-Pop Boat, TPT 35, 176-177 (1997).

C5-25: IR-CONTROLLED FLYER
None.

C5-31: AIR TRACK - SAILING UPWIND
Nathan Brown, Vector Addition and the Speeding Ticket, TPT 31, 274-276 (1993).

C5-32: SAILING UPWIND - HAIRDRYER AND SAILBOAT
Halsey C. Herreshoff and J. N. Newman, The Study of Sailing Yachts, Scientific American, Volume 215, #2, August 1966, pp. 60-68
Paul G. Hewitt, Sailboat Demonstration, TPT 6, 79-80 (1968).
A. D. Franklin and R. Stoller, Equipment Note: Use of the Air Trough to Illustrate Sailboat Motion, AJP 40, 626 (1972).
Janet Bellcourt Pomeranz, Boating, anyone?, TPT 15, 416-420 (1977).
R. E. Benenson, Andrew Hmiel, and Kathleen Kowsky, Air Track to Demonstrate Sailing Into the Wind, TPT 16, 505-506 (1978).
P. J. Jackson, Letter: Sailing into the Wind, TPT 17, 80 (1979).
Sabinus H. Christensen, Letter: Sailing into the Wind, TPT 17, 416, 418 (1979).
Alan J. Faller, "On Tacking," Scientific Report No. 10 from the Center for Meta-Meteorological Studies, University of Maryland, 1988.
Paul Jackson, What Limits the Speed of a Sailboat?, TPT 18, 224-225, (1980).
George C. Goldenbaum, Equilibrium sailing velocities, AJP 56(3), 209-215, (1988) .
Richard C. Bradley, PROBLEM: SAILING DOWN THE RIVER, AJP 64, 686 (1996).
Richard C. Bradley, SOLUTION TO THE PROBLEM ON PAGE 686, AJP 64, 826 (1996).
John C. Salzsieder, Wind car, TPT 37, 359 (1999).

C5-41: HOURGLASS PROBLEM
Mach, The Science of Mechanics, pp. 308-313.
Sutton, Demonstration Experiments in Physics, Demonstration M-116. Galileo's Water Balance.
Meiners, Physics Demonstration Experiments, Sections 9-4.10 and 9-4.11.
Walter P. Reid, Weight of an Hourglass, AJP 35, 351-352 (1967).
Robert Everett Vermillion, The force on a surface by a stream of falling water, TPT 10, 528 (1972).
Ira M. Freeman, Letter: Galileo's Water Bucket Experiment, TPT 11, 325 (1973).
K. Y. Shen and Bruce L. Scott, The hourglass problem, AJP 53, 787-788 (1985).
Sketches for construction of U MD apparatus.
Ian H. Redmount and Richard H. Price, The weight of time, TPT 36, 432-434 (1998).
Metin Yersel, The flow of sand, TPT 38, 290-291 (2000).

C5-51: BALLISTOCARDIOGRAPHY
Isaac Starr and Henry A. Schroeder, Ballistocardiogram. II. Normal Standards, Abnormalities Commonly Found in Diseases of the Heart and Circulation, and Their Significance, J. of Clinical Investigation 19(30), 437-450 (1940).
Isaac Starr, O Horwitz, R. L. Mayock and E. B. Krumbhaar, Standardization of the Ballistocardiogram by Simulation of the Heart's Function at Necroscopy; With a Clinical Method for the Estimation of Cardiac Strength and Normal Standards for It, Circulation 1; 1073-1096 (1950).
Isaac Starr and Francis C. Wood, Twenty-Year Studies with the Ballistocardiograph, Circulation 23, 714-732 (1061).
David M. Harrison, The Ballistocardiogram, www.upscale.utoronto.ca/GeneralInterest/Harrison/BCG/BCG.html (2003)

C6: FRICTION

C6-01: INCLINED PLANE - FRICTION BOX AND WEIGHTS
Margaret Stautberg Greenwood, Inclined Plane on a Frictionless Surface, TPT 28, 110 (1990).
William M. Wehrbein, Frictional forcs on an inclined plane, AJP 60, 57-58 (1992).
Jonathan Mitschele and Matthew Muscato, Demonstration Normal Forces with an Electronic Balance, TPT 32, 555-556 (1994).
A. M. Nunes and J. P Silva, Tilted boxes on inclined planes, AJP 68, 1042-1049 (2000).

C6-02: INCLINED PLANE - FRICTION BLOCK
V. E. Eaton, A Novel Method of Measuring the Coefficient of Dynamic Friction, AJP 4, 37-39, (1936).
PHYSICS: Where's the Rub?, Discover Magazine, October 1995.
D. D. Venable, A. P. Batra, and T. Hubsch, Modifying the inclined-plane experiment, TPT 39, 215-217 (2001).
David Wheeler, Significant errors, TPT 39, 324-325 (2001).
J. Krim, Resource Letter: FMMLS-1: Friction at macroscopic and microscopic length scales, AJP 70, 890-897 (2002).

C6-03: INCLINED PLANE - FRICTION WITH 3 BLOCKS
None.

C6-04: FRICTION DIRECTION ON INCLINED PLANE
Julius Sumner Miller, The Paradox of the Stillson Wrench, AJP 22, 236 (1954).
Thomas D. Phillips, Finding the External Force, AJP 22, 583-585 (1954).
F. H. Northover, Problem of the Stillson Wrench, AJP 23, 276-278 (1955).
Peter Froehle, Tricks of the Trade: Centripetal Force Provided by Friction, TPT 30, 299 (1992).
Jonathan F. Reichert, How did friction get so "smart"?, TPT 39, 29-31 (2001).

C6-05: AIR TRACK - INCLINED PLANE FRICTION
A. A. Bartlett, An Effect of Friction in an Accelerated System, AJP 37, 665-666 (1969).
Stanislaw Bednarek, Magnetic track for experiments in mechanics, APT 60, 664-666 (1992).
Roger F. Larson, Measuring the coefficient of friction of a low-friction cart, TPT 36, 464-465 (1998).

C6-11: SLIDING FRICTION - LECTURE TABLE AND FELT
B.W. Bartlett, Coefficients of Friction Greater than Unity, AJP 12, 48, (1944).
Halson V. Eagleson, An Experimental Method for Determining Coefficients of Sliding Friction, AJP 13, 43-44, (1945).
Leonard Eisner, Materials with Large Frictional Coefficients, AJP 27, 58 (1959).
Charles J. Reidl, Jr., The Coefficient of Kinetic Friction, TPT 28, 402 (1990).
Rebecca Morrow and David P. Jackson, A strange behavior of friction, TPT 37, 412-415 (1999).
Leo Takahashi, A friction experiment, TPT 40, 374-375 (2002).

C6-12: SKIDDING AUTOMOBILE
Jack Irwin and Derek Swinson, A Demonstration of Car Braking Instabilities,TPT 28, 522-524, (1990).
Smith, et.al., AJP 5, 106, (1937).
Arthur Taber Jones, The Skidding Automobile, AJP 5, 187, (1937).
Little Stinkers column, Skidding Automobile, TPT(3), 338, (1965).
Little Stinkers column, Skidding Automobile, TPT 4, 45-46, (1966).
Fred M. Goldberg, Friction in a Moving Car, TPT 13, 234-236, (1975).
United States vs. General Motors(1988), Case of GM's X-car brake system, Federal Appeals Court for the District of Columbia.
H. Richard Crane, How Things Work: How Antilock Brakes May Save You from a Spin, TPT 32, 246-247 (1994).
Sutton, Demonstration Experiments in Physics, Demonstration M-53. Automobile Skidding.

C6-13: FRICTION BETWEEN GLASS SURFACES
None.

C6-14: SOCIAL CLIMBER
R. D. Edge, String and sticky tape experiments, TPT 17, 386, (1979).

C6-15: SOCIAL DESCENDER - FRICTION TOY
H. Richard Crane, How Things Work: A Reluctant Hourglass and a Backing-down Woodpecker, TPT 31, 532-533 (1993).
Ron Edge, The bouncy paper clippotential and kinetic energy, TPT 38, 470 (2000).

C6-16: SLIDING AND STATIC FRICTION
None.

C6-17: FRICTION VS. PULLING ANGLE
Willem H. van den Berg, The best angle for dragging a box, TPT 38, 506-508 (2000).
Ronald Newburgh, Other "smart" forces, TPT 39, 133 (2001).

C6-21: SUSPENDED ROD ON WATER
Sutton, Physics Demonstration Experiments, Demonstration M-31. Center of Gravity.
Joseph Priest and David F. Griffing, Model for an Undergraduate Physics Problem, TPT 28, 210-213 (1990).
A. Raymond Penner, Suspension of a disk on a surface of water, AJP 68, 549-551 (2000).

C7: COLLISIONS

C7-01: AIR TRACK - ELASTIC COLLISIONS
W. Klein and G. Nimtz, Inelastic collision and the motion of the center of mass, AJP 57, 182, (1989).
R. D. Edge, string and sticky tape experiments: Linear dynamics with marbles, TPT 17, 200-202 (1979).
Information Sheet.
Norman Derby, Reality and theory in a collision, TPT 37, 24-27 (1999).
P. A. DeYoung and B. Mulder, Studying collisions in the general physics laboratory with quadrature light emitting diode sensors, AJP 70, 1226-1230 (2002).

C7-02: AIR TRACK - INELASTIC COLLISIONS
R. D. Edge, String and Sticky Tape Experiments: Linear dynamics with marvles, TPT 17, 200-202 (1979).
W. Klein and G. Nimtz, Inelastic collision and the motion of the center of mass, AJP 57, 182, (1989).
Herman Erlichson, Newton's Strange Collisions, TPT 33, 169-171 (1995).
Information Sheet.
C. T. Tindle, An intuitive approach to collisions, TPT 36, 344-346 (1998).
A. P. French, "Intuitively obvious?", TPT 36, 453-454 (1998).
David Larabee, Car collisions, physics, and the State Highway Patrol, TPT 38, 334-336 (2000).
Kurt T. Loveland, Simple equations for linear partially elastic collisions, TPT 38, 380-381 (2000).
Hui Hu, More on one-dimensional collisions, TPT 40, 72 (2002).
John L. Roeder, Analyzing collisions in terms of Newton's laws. TPT 41, 97-99 (2003).

C7-03: AIR TRACK -SCATTERING WITHOUT CONTACT
Information Sheet.
M. Parodi and D. Pescetti, Coupling of Air Track Gliders by Forces Acting at a Distance, AJP42, 414-416 (1974).
W. Klein and G. Nimtz, Inelastic collision and the motion of the center of mass, AJP 57, 182, (1989).
H. G. Lukefahr, Magnetic dipole interactions on an air track, AJP 60, 1134-1136 (1992).

C7-04: AIR TRACK - COLLISION VELOCITY MULTIPLIER
W. Klein and G. Nimtz, Inelastic collision and the motion of the center of mass, AJP 57, 182, (1989).
Information Sheet.

C7-11: COLLISIONS OF BALLS - EQUAL MASSES
Harvey B. Lemon, An Almost Forgotten Case of Elastic Impact, AJP 3, 36 (1935).
Matthias Reinsch, Dispersion-free linear chains, AJP 62, 271-278 (1994).
David Auerbach, Colliding rods: Dynamics and relevance to colliding balls, AJP 62, 522-525 (1994).
Robert Erlich, Experiments with "Newton's Cradle," TPT 34, 181-183 (1996).
J. D. Gavenda and J. R. Edgington, Newtons Cradle and Scientific Explanation, TPT 35, 411-417 (1997).
P. Roura, Collision Duration in the Elastic Regime, TPT 35, 435-436 (1997).
David Kagan and Chris Gaffney, Colliding magnetic pendula: When is a collision not collision-like?, TPT 40, 280-283 (2002).
Pere Roura, Collisions between rods: A visual analysis, TPT 41, 32-35 (2003).
Adrian Cho, Softening the Blow, Physical Review Focus, 17 March 2003.
Nathan Goodman, Magnet demo attracts pupils' attention, Physics Education, 314-315 (July 2005).
Stefa Hutzler, Gary Delaney, Denis Weaire, and Finn MacLeod, Rocking Newton's cradle, AJP 72(12), 1508-1516 (2004).

C7-12: COLLISIONS OF BALLS - ONE LIGHTER MASS
Seville Chapman, A problem Involving the Order of Impacts, Proceedings of the AAPT< Philadelphia meeting, December 1940, AJP 9, 56 (1941).
Seville Chapman, Some Interesting Aspects of the Collision Ball Apparatus, AJP 9, 357-360 (1941).
Harold K. Schilling and Henry Yeagley, A New Impact Apparatus, AJP 15, 60-64 (1947).
John V. Kline, The Case of the Counting Balls, AJP 28, 102-103 (1960).
Seville Chapman, Misconception Concerning the Dynamics of the Impact Ball Apparatus, AJP 28, 705-711 (1960).
R. Edwin Worley, Impact Demonstration with Plastic Croquet Balls, AJP 30, 769-770 (1962).
James D. Kerwin, Velocity, Momentum, and Energy Transmissions in Chain Collisions, AJP 40, 1152-1157 (1972).
Leonard Flansburg and Karl Hudnut, Dynamic solutions for linear elastic collisions, AJP 47, 911-914 (1979).
Alexander Langsdorf, Jr., Letter: Referees Beware!, AJP 48, 335 (1980).
Christian Lehmann and Manfred Rosenbauer, Focusing and defocusing collisions of atoms in solids: A classroom demonstration, AJP 48, 496-497 (1980).
Christian Lehmann and Manfred Rosenbauer, Erratum: "Focusing and defocusing collisions of atoms in solids: A classroom demonstration," [AJP 48, 496-497 (1980)], AJP 49, 89 (1981)..
F. Herrmann and P. Schmalzle, Simple explanation of a well-known collision experiment, AJP 49, 761-764 (1981).
Alexander Langsdorf, Jr., Letter: AJP 50, 105 (1982).
F. Herrman and M. Seitz, How does the ball-chain work?, AJP 50, 977-981 (1982).
Jean C. Piquette and Mu-Shiang Wu, Comments on "Simple explanation of a well-known collision experiment," AJP 52, 83 (1984).
F. Herrmann and P. Schmalzle, Response to "Comments on "Simple explanation of a well-known collision experiment," AJP 52, 84 (1984).

C7-13: COLLISIONS OF BALLS - GRADUATED MASSES
Information Sheet from manufacturer.
Meiners, Physics Demonstration Experiments, Section 9-5.12.
John Satterly, Ball Pendulum Impact Experiments, AJP 13, 170-174 (1945).
D. Rae Carpenter, David J. Rehbein, and Robert J. Bonometti, Ban Deodorant Ball Mortar, TPT 26, 522-524 (1988).
Neil M. Shea, Nonideal Multiball Collisions, TPT 30, 197 (1992).
John B. Hart and Robert B. Herrmann, Energy Transfer in One-Dimensional Collisions of Many Objects, AJP 36, 46-48 (1968).
Walter Roy Mellen, Aligner for Elastic Collisions of Dropped Balls, TPT 33, 56-57 (1995).
Richard V. Mancuso and Kevin R. Long, The Astro-Blaster, TPT 33, 358-360 (1995).
Hasan Fakhruddin, Maximizing Imparted Speed in Elastic Collisions, TPT 41, 338-339 (2003).

C7-14: COLLISIONS OF BALLS WITH FLOOR
Warren A. Turner and Glenn W. Ellis, The energetics of a bouncing ball, TPT 37, 496-498 (1999).
C. E. Aguiar and F. Laudares, Listening to the coefficient of restitution and the gravitational acceleration of a bouncing ball, AJP 71, 499-501 (2003).

C7-15: COLLISIONS OF BALLS - 3 TO 1 MASS RATIO
Equation summary sheet.
W. W. Sleator, Impact of Elastic Spheres, AJP 5, 284-285 (1937).
"Class of William G. Harter," Velocity amplification in Collision Experiments Involving Superballs, AJP 39, 656-663 (1971).
G. Stroink, Superball problem, TPT 21, 466 (1983).
Ian Bruce, A one-dimensional collision experiment, AJP 58, 696 (1990).
Herman Erlichson, Newton's Strange Collisions, TPT 33, 169-171 (1996).

C7-16 HAPPY AND UNHAPPY BALLS
Paul J. Haigh, Demonstrating Elastic and Inelastic Collisions Using Bouncing and Nonbouncing Balls, AJP 37, 333, (1969).
Instruction Sheet, Arbor Scientific, Happy and Unhappy Balls, P6-1000, Ann Arbor, MI.
D. Gugan, Inelastic collision and the Hertz theory of impact, AJP (68), 920-924 (2000).
Rod Cross, The coefficient of restitution for collisions of happy balls, unhappy balls, and tennis balls, AJP 68, 1025-1031 (2000).

C7-17 SUPERBALL
Richard L. Garwin, Kinematics of an Ultraelastic Rough Ball, AJP 37, 88-92 (1969).
David A. Katz, Chemistry in the Toy Store: SUPER BALL.
Rod Cross, Measurements of the horizontal coefficient of restitution for a superball and a tennis ball, AJP 70, 482-489 (2002).
Rod Cross, Grip-slip behavior of a bouncing ball, AJP 70, 1093-1102 (2002).

C7-18: COLLISIONS OF BALLS - ASTROBLASTER
Richard V. Mancuso and Kevin R. Long, The Astro-Blaster, TPT 33, 358-360 (1995).

C7-21: ENERGY AND MOMENTUM - COLLISION AND PROJECTILE
Information Sheet.

C7-22: COLLISION OF BALL WITH STUDENT
None.

C7-23: MEDICINE BALL AND SKATEBOARD
None.

C7-24: SILLY PUTTY
David A. Kratz, Chemistry in the Toy Store, Dept. of Chemistry, Comm. Coll. of Phil, Phil, PA., 1988.

C7-25: SUPERBALL, VACUUM MUD AND WOOD BLOCK COLLISIONS
Paul G. Hewitt, The bouncing dart, TPT 22, 302 (1984).

C7-26: BOUNCING PUTTY AND NON-BOUNCING SUPERBALL
None.

C7-27: COLLIDING STEEL SPHERES
Arbor Scientific

C7-41: DRY ICE PUCK COLLISIONS
D.D. Snyder and H. D. Nine, Some "Friction-Free" Demonstrations, AJP 28, 76-77, 1960..
Frey Scientific Co., Frictionless Puck, Cat. No. 1832, Mansfield, OH.

C7-42: AIR TABLE - COLLISIONS OF PUCKS
J. Charles Williamson, Ramon O. Torres-Isea, and Craig A. Kletzing, Analyzing linear and angular momentum conservation in digital videos of puck collisions, AJP 68, 841-847 (2000).
Bernard J. Feldman, Elementary Physics in a Real Automobile Accident, TPT 35, 335-338 (1997).
David T. Kagan and Lynda Klein, Why is there no vertex in air-table collisions?, TPT 38, 414-415 (2000).

C7-43: AIR TABLE - SMALL - COLLISIONS OF PUCKS
None.

C7-44: COLLISIONS - HOVERPUCKS
None.

C7-51: BALLISTIC PENDULUM - PELLET GUN
J. Strnad, Trouble with a Ballistic Pendulum, AJP 38, 532-534, (1970).
Carl E. Scheie, Ballistic Pendulum, TPT 11, 426, (1974).
Thomas B. Greenslade, Nineteenth-Century Textbook Illustrations: The Ballistic Pendulum, TPT 29, 415-416 (1991).
David G. Willey, Conservation of Mechanical Energy Using a Pendulum, TPT 29, 567 (1991).
Physics Lecture Demonstrations Information and Data Sheet.
Cathy Abbot, Pretty Cool Collision Experiment, TPT 35, 397-398 (1997).
Denis Donnelly and Joshua B. Diamond, Slow collisions in the ballistic pendulum: A computational study, AJP 71, 535-540 (2003).

C7-52: BALLISTIC PENDULUM - LAB MODEL
Physics Lecture Demonstration Reference Sheet, Experiment 1, The Ballistic Pendulum.

C7-53: AIR TRACK - SPEED OF AIR GUN PELLET
F. Herrmann and M. Schubart, Measuring momentum without use of p=mv in a demonstration experiment, AJP 57, 858-859 (1989).
David P. Taylor, The Ballistic Slider, TPT 33, 443-445 (1995).

C7-54: BALLISTIC PENDULUM - BOW AND ARROW
Saylor S. Milton, On Predicting the Range of an Arrow, TPT 8, 526-527, (1970).
S. P. Stoylov, J. C. Nsanzabera, and P. C. Karenzi, A Demonstration of Momentum Conservation using Bow, Arrow, and Ballistic Pendulum, AJP 40, 430-432 (1972).
Physics Lecture Demonstation, Ballistic Pendulum Blueprint, Data, and Record Form.
Rod Cross, Why bows get stiffer and racquets get softer when the strings are added, AJP 69, 907-910 (2001).

C8: MECHANICAL ENERGY AND POWER

C8-01: GIANT PENDULUM
James H. Head, "Faith in Physics:" Building New Confidence with a Classic Pendulum Demonstration, TPT 33, 10-15 (1995).

C8-02: GIANT PENDULUM FOR CLASSROOM
None.

C8-03: GALILEO'S PENDULUM
Herbert T. Wood, The Interrupted Pendulum, TPT 32, 422-423 (1994).
Herman Erlichson, Galeileo's pendulum, TPT 37, 478-479 (1999).
Bradley E. Miller, Period of an interrupted pendulum, TPT 40, 476-478 (2002).

C8-04: HILL TRACK
None.

C8-05: CONSERVATION OF ENERGY IN VERTICAL PROJECTILE
Lecture Demonstrations Data and Information Sheets.

C8-06: PILE DRIVER
Julius Sumner Miller, Observations on a Pile Driver, AJP 22, 409 (1954).

C8-11: INTERNAL VS. EXTERNAL ENERGY - SPRING -COUPLED SUPERBALLS
None.

C8-12: JUMPING MASSES WITH INTERNAL SPRING
None.

C8-13: BUNGEE JUMPER MODEL
David Kagan and Alan Kott, The Greater-Than-g Acceleration of a Bungee Jumper, TPT 34, 368-373 (1996).
Hubert Biezeveld, The Bungee Jumper: A Comparison of Predicted and Measured Values, TPT41, 238-241 (2003).

C8-14: JUMPING CLAMP
None.

C8-21: ROCK AND WASTE BASKET
None.

C8-22: ENERGY CONSERVATION - SUPERBALL AND SOUND BOARD
None.

C8-23: WORK DONE BY PUSHING ON WALL
Kenneth S. Mendelson, NOTES AND DISCUSSIONS: Physical and colloquial meanings of the term "work," AJP 71, 279-281 (2003).
Robert C. Hilborn, COMMENT ON "PHYSICAL AND COLLOQUIAL MEANINGS OF THE TERM "WORK," BY KENNETH S. MENDELSON, AJP 71, 743 (2003).
Kenneth S. Medelson, Response to "COMMENT ON "PHYSICAL AND COLLOQUIAL MEANINGS OF THE TERM "WORK,"" AJP 71, 743 (2003).

C8-31: POWER - EXERCISE CYCLE
Stan Jakuba, SI Notes: Effect of Exercise Expressed in Joules and Watts, TPT 29, 512-513 (1991).
Exercise cycle instruction manual.

C8-32: POWER - CLIMBING LADDER
None.

C8-33: POWER - USING GRAVITY
None.

C8-34: POWER - INSTRUCTOR DRAGGING CONCRETE BLOCK
William J. Leonard, Dragging a box: The representation of constraints and the constraint of representations, TPT 39, 412-414 (2001).