Solutions to Sample Questions and Formulas given on Exam 3

The answers are, in the order of the questions (no warranty for accuracy)

d a b a b d d

a d c a b d ca b d
a d a c a d a c e d


Part of first page of exam:
Physics 161-020x

Third Hour Exam

April 28, 2004
Instructions: Fill in the "Scantron" sheet for questions 1-20. Some of the questions tell you to fill in answer "a"; the answer that counts for those questions is what you write on this exam sheet. You will hand in both, therefore fill in your name above AND, last name first, on the Scantron sheet (Your Student Number is not required). Also fill in the pledge on the reverse side of the scantron sheet.

Possibly Helpful Formulas
p = mv        p1i + p2i = p1f + p2f       rCM = 1
M

å
 i 
 miri        vCM = 1
M
å
 i 
mivi
w = dq/dt        a = dw/dt = d2q/dt2        v = rw       r = ra
I =
å
 i 
 miri2       I = ICM + MD2        K = 1/2ICMw2 + 1/2MvCM2
|A×B| = AB sinq       t = r×F        L = r×p        LO = LCM + r×ptot
å
 		Fext = dptot
dt
 = M aCM        å
text = dLtot
dt
   ( = Ia if spinning about fixed axis)
Ltot, i = Ltot, f     if å
text = 0