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A 66.5 kg skier is moving at 6.80 m/s on a frictionless, horizontal snow-covered plateau when...

A 66.5 kg skier is moving at 6.80 m/s on a frictionless, horizontal snow-covered plateau when she encounters a rough patch 3.90 m long. The coefficient of kinetic friction between this patch and her skis is 0.330. After crossing the rough patch and returning to friction-free snow, she skis down an icy, frictionless hill 2.85 m high.

Part A. How fast is the skier moving when she gets to the bottom of the hill?

Part B. How much internal energy was generated in crossing the rough patch?

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Answer #1

The magnitude of internal energy generated is 0.840 * 10^3 J

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