一道英文物理题 结果就行A child slides down a slide with a 23° incline,and at the bottom her speed is precisely three-fifths what it would have been if the slide had been frictionless.Calculate the coefficient of kinetic friction between t
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一道英文物理题 结果就行A child slides down a slide with a 23° incline,and at the bottom her speed is precisely three-fifths what it would have been if the slide had been frictionless.Calculate the coefficient of kinetic friction between t
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