November 29, 2015

Homework Help: physics

Posted by john on Monday, May 20, 2013 at 10:56pm.

A tennis ball with a speed of 12.5 m/s is
moving perpendicular to a wall. After striking
the wall, the ball rebounds in the opposite
direction with a speed of 11.4 m/s.
If the ball is in contact with the wall for
0.0139 s, what is the average acceleration of
the ball while it is in contact with the wall?
Take “toward the wall” to be the positive
Answer in units of m/s2

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