Question: A 68-kg base runner begins his slide into second base when he is moving at a speed of 3.9 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base.
Part A: How much mechanical energy is lost due to friction acting on the runner?
Part B: How far does he slide?
Please show me how work it out above question and thanks.