A 720 kg base runner begins his slideinto second base when, Ask an Expert

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A 72.0 kg base runner begins his slideinto second base when he is moving at a speed of 4 m/s. The coefficient of friction between hisclothes and Earth is 0.70. He slides so that his speed is zero justas he reaches the base.

a) How much mechanical energy is lost due to friction acting on the runner?
b) How far does he slide?

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