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A 60.0 kilogram skier starts from rest at the top of a ski slope 95.0 meter high.
(a) If frictional forces do -10.5 kJ of work on her as she descends, find how fast is she going at the bottom of the slope?
m/s (b) Now moving horizontally, the skier crosses a patch of soft snow, where µk = 0.2. If the patch is 83.0 meter wide and the average force of air resistance on the skier is 160 Newton, determine how fast is she going after crossing the patch?
m/s (c) The skier hits a snowdrift and penetrates 2.2 meter into it before coming to a stop. Find the average force exerted on her by the snowdrift as it stops her?
N
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