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April 21, 2014

Homework Help: physics

Posted by Alex on Monday, August 20, 2012 at 5:56pm.

I have been stuck on this for a while now and cant figure out what it is i am doing wrong HELP!!!

A tennis ball with a velocity of 15.5 m/s is
thrown perpendicularly at a wall. After strik-
ing the wall, the ball rebounds in the opposite
direction with a speed of 9.3 m/s.
If the ball is in contact with the wall for
0.015 s, what is the average acceleration of
the ball while it is in contact with the wall?

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