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# A 60.0-kg skier starts from rest at the top of a ski slope ISBN: 9780321675460 31

## Solution for problem 62P Chapter 7

University Physics | 13th Edition

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Problem 62P

A 60.0-kg skier starts from rest at the top of a ski slope 65.0 m high. (a) If friction 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 µk = 0.20. If the patch is 82.0 m wide and the average 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 average force exerted on her by the snowdrift as it stops her?

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Solution 62P a)The skier’s kinetic energy at the bottom can be found from the potential energy at the top minus the work done by friction, K 1 mgh W f = (60 kg × 9.8 m/s × 65 m) 10500 J or K = 38200 J 10500 J = 27720 J 1 2K1 Then v = 2 m = 2(27720 J 60 kg = 30.4 m/s b)K...

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##### ISBN: 9780321675460

This textbook survival guide was created for the textbook: University Physics, edition: 13. The full step-by-step solution to problem: 62P from chapter: 7 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. Since the solution to 62P from 7 chapter was answered, more than 316 students have viewed the full step-by-step answer. This full solution covers the following key subjects: skier, patch, average, snowdrift, slope. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. The answer to “A 60.0-kg skier starts from rest at the top of a ski slope 65.0 m high. (a) If friction 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 µk = 0.20. If the patch is 82.0 m wide and the average 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 average force exerted on her by the snowdrift as it stops her?” is broken down into a number of easy to follow steps, and 119 words. University Physics was written by and is associated to the ISBN: 9780321675460.

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