A child sleds down a snowy hillside starting from rest. The hill has a 15 degree slope, with a long stretch of level field at the foot. The child starts 50 feet up along the slope and continues for 100 feet on the level field before coming to a complete stop. Find the coefficient of friction between the sled and the snow assuming that it is constant throughout the ride. Neglect air resistance.

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height h 50 sin 15 h 1294 ft work done by friction change in mechanical ene... View the full answer