Answers

2014-08-08T20:40:03+08:00
We suppose that when the ball hit the racket, it was in rest. So we compute the acceleration: a = (30 m/s - 0 m/s) / (0.005 s) = 6000 m/s^2. Using the formula: F = MA, we solve: F = (0.06 kg)(6000 m/s^2) = 360 N.
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