Posted by **Angel** on Sunday, January 22, 2012 at 3:55pm.

A 2.7 kg ball strikes a wall with a velocity of

7.6 m/s to the left. The ball bounces oﬀ with

a velocity of 5.2 m/s to the right.

If the ball is in contact with the wall for

0.23 s, what is the constant force exerted on

the ball by the wall?

Answer in units of N

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