Question

7.23 Finding coefficients of kinetic friction between skies and the snow

A 61 kg skier on level snow coasts 184 m to a stop from a speed of 12.0 m/s. (a) Use the work-energy principle to find the coefficient of kinetic friction between theskis and the snow. (b) Suppose a 75 kg skier with twice the starting speed coasted the same distance before stopping. Find the coefficient of kinetic friction betweenthat skier's skis and the snow.

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