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A skier slides horizontally along the snow for a distance of 12 m before coming to rest. the coefficient of kinetic friction between the skier and the snow is μk = 0.060. initia…
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A skier slides horizontally along the snow for a distance of 12 m before coming to rest. the coefficient of kinetic friction between the skier and the snow is μk = 0.060. initia…
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Feb 21, 2018
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A skier slides horizontally along the snow for a distance of 12 m before coming to rest. the coefficient of kinetic friction between the skier and the snow is μk = 0.060. initially, how fast was the skier going?
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We can use work-energy to solve this question. The work done by friction on the skier will be equal in magnitude to the skier's initial kinetic energy. KE = Work (1/2)mv^2 = mg ÎĽk d v^2 = 2g ÎĽk d v = sqrt{ 2g ÎĽk d } v = sqrt{ (2) (9.80 m/s^2) (0.060) (12 m) } v = 3.76 m/s Initially the skier was moving at a speed of 3.76 m/s
Gvs Akhil
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Feb 25, 2018
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