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Can someone help me? A 73.6 kg base runner begins his slide into second base while moving at a speed of 4.3 m/s. The coefficient of friction between his clothes and Earth is 0.62. He slides so that his speed is zero just as he reaches the base. The acceleration of gravity is 9.81 m/s2 . a) How much mechanical energy is lost due to friction acting on the runner? Answer in units of J
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