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OpenStudy (anonymous):
A sled slides 100 m down a hill that slopes at an angle of 30° with the horizontal direction. The sled attains a final velocity of 20 m/s at the base of the slope. What fraction of the energy was lost due to friction?
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OpenStudy (anonymous):
So what I have done so far is : h = 100sin30 = 50 m
OpenStudy (naveenbabbar):
[(mgh-1/2 mv2)/mgh] * 100= 60%
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