Teaching Physics with the Physics Suite Edward F. Redish Home | Action Research Kit| Sample Problems | Resources | Product Information
	Problems Sorted by Type | Problems Sorted by Subject | Problems Sorted by Chapter in UP

One day, while driving along the Washington Beltway (at non-rush-hour so we were traveling at normal highway speed), my wife and I heard a tapping from the front end of my car, somewhere under the hood. It sounded like "click-click-click-click" -- pretty fast -- about two clicks per second. My wife said, "You probably ought to have that taken in and looked at." I said, "No, it's probably just a stone caught in a tire." She said, "Not at this speed. It's ticking too slowly."

Who is right? Do a quantitative estimation to decide so we don't have to call the Car Talk Guys.

Not finding what you wanted? Check the Site Map for more information.

Page last modified October 23, 2007: G01