62.0 kg skier starts from rest at the top of a ski slope 55.0 m high. (a) If the frictional forces do -9.80 kJ of work on her as she descends, how fast is she going at the bottom of the slope? (b) Now moving horizontally, the skier crosses an 85.0 m wide patch of soft snow, where µK = 0.31. How fast is she moving after crossing the patch?
62.0 kg skier starts from rest at the top of a ski slope 55.0 m high. (a) If the frictional forces do -9.80 kJ of work on her as she descends, how fast is she going at the bottom of the slope? (b) Now moving horizontally, the skier crosses an 85.0 m wide patch of soft snow, where µK = 0.31. How fast is she moving after crossing the patch?
Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter7: Conservation Of Energy
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Problem 43P: A certain automobile engine delivers 2.24 104 W (30.0 hp) to its wheels when moving at a constant...
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62.0 kg skier starts from rest at the top of a ski slope 55.0 m
high. (a) If the frictional forces do -9.80 kJ of work on her as she descends, how fast is she going at
the bottom of the slope? (b) Now moving horizontally, the skier crosses an 85.0 m wide patch of soft
snow, where µK = 0.31. How fast is she moving after crossing the patch?
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