Posted by **Nala** on Wednesday, October 14, 2009 at 9:53pm.

A tennis ball of mass 57. g bounces off a wall. Right before hitting the wall, the ball is moving to the right and up with vx=+40. m/s and vy=+10. m/s. Right after bouncing off the wall, the ball is moving to the left and up with vx=-35. m/s and vy=+10. m/s.

If the ball is in contact with the wall for 4.5 ms, what is the average force that the wall makes on the ball?

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