Posted by **adriana** on Sunday, October 19, 2008 at 2:31pm.

A tennis ball has a velocity of 25 m/s and a mass of 57.5 g. After the ball hits a tennis racket, the velocity becomes twice that of the original speed and goes in the opposite direction. What is the force between the ball and the racket if the time that they interact is 0.07 s? Assume the force is constant.

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