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July 23, 2014

Homework Help: PHYSICS

Posted by Hep on Wednesday, December 19, 2012 at 3:55am.

During a play, a tennis player hits the ball when its velocity is 20 m/s towards him. The racquet exerts a force of 540N on the ball for 6.90 ms, giving its returning velocity of 42 m/s.
Find the mass of the ball

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