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04-02-2018
Physics

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A 56 kg skier starts from rest at the top of a 1200-m-long trail which drops a total of 170 m from top to bottom. at the bottom, the skier is moving 13.0 m/s .

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08-02-2018

the skier used 9520 joules getting down the hill. each second he used up 732.3076923077 joules.

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