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April 20, 2014

Homework Help: physics

Posted by Yuli on Monday, November 28, 2011 at 12:50am.

A 65.0-kg skier coasts up a snow-covered hill that makes an angle of 27.4 with the horizontal. The initial speed of the skier is 6.37 m/s. After coasting 2.07 m up the slope, the skier has a speed of 4.06 m/s. Calculate the work done by the kinetic frictional force that acts on the skis.
can someone explain this question to me please?

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