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October 1, 2014

Homework Help: physics

Posted by crystal on Friday, November 16, 2012 at 6:05pm.

a child bounces a superball on the sidewalk. The velocity change of the superball is from 23m/s downward to 14m/s upward. if the contact time with the sidewalk is 1/800s, what is the magnitude of the average force exerted on the superball by the sidewalk?

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