7.62 A 60.0-kg skier starts from rest at the top of a ski slope 65.0 m high. (a) If frictional forces do -10.5 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 a patch of soft snow, where μ = 0.20. If the patch is 82.0 m wide and the aver- age force of air resistance on the skier is 160 N, how fast is she going after crossing the patch? (c) The skier hits a snowdrift and penetrates 2.5 m into it before coming to a stop. What is the aver- age force exerted on her by the snowdrift as it stops her?

7.62 A 60.0-kg skier starts from rest at the top of a ski slope 65.0 m high. (a) If frictional forces do -10.5 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 a patch of soft snow, where μ = 0.20. If the patch is 82.0 m wide and the aver- age force of air resistance on the skier is 160 N, how fast is she going after crossing the patch? (c) The skier hits a snowdrift and penetrates 2.5 m into it before coming to a stop. What is the aver- age force exerted on her by the snowdrift as it stops her?

Name: 7.62 ** A 60.0-kg skier starts from rest at the top of a ski slope65.
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Description: 7.62 ** A 60.0-kg skier starts from rest at the top of a ski slope65.0 m high. (a) If frictional forces do -10.5 kJ of work on her asshe descends, how fast is she going at the bottom of the slope?(b) Now moving horizontally, the skier crosses a patc

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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