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A boy coasts down a hill on a sled, reaching a level surface at the bottom with a speed of 15 m/s. If the coefficient

A boy coasts down a hill on a sled, reaching a level surface at the bottom with a speed of 15 m/s. If the coefficient of friction between the sled's runners and the snow is 0.11 and the boy and sled together weigh 550 N, how far does the sled travel on the level surface before coming to rest?

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