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October 1, 2014

October 1, 2014

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

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

direction.

Answer in units of m/s2

- physics -
**Henry**, Tuesday, May 21, 2013 at 8:22pma=(V-Vo)/t

a=(-11.4-12.5)/0.0139 = -1719 m/s^2.

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