A 684-kg skier coasts up a snow-covered hill that makes an, Ask an Expert

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A 68.4-kg skier coasts up a snow-covered hill that makes an angle of 25.5 ° with the horizontal. The initial speed of the skier is 9.71 m/s. After coasting a distance of 1.09 m up the slope, the speed of the skier is 3.05 m/s.

(a) Find the work done by the kinetic frictional force that acts on the skis.

(b) What is the magnitude of the kinetic frictional force?

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