A track runner, with a mass of 78.0 kg, slides on the ground after tripping and falling. At the start of the slide, the runner moves at a speed of 3.90 m/s before coming to rest. The coefficient of friction between the runner and the ground is 0.700. (a)Find the change in mechanical energy of the runner (in J) from the start of the slide to when she comes to rest. (b)How far (in m) does the runner slide?
A track runner, with a mass of 78.0 kg, slides on the ground after tripping and falling. At the start of the slide, the runner moves at a speed of 3.90 m/s before coming to rest. The coefficient of friction between the runner and the ground is 0.700. (a)Find the change in mechanical energy of the runner (in J) from the start of the slide to when she comes to rest. (b)How far (in m) does the runner slide?
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
Section: Chapter Questions
Problem 37P
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1. A track runner, with a mass of 78.0 kg, slides on the ground after tripping and falling. At the start of the slide, the runner moves at a speed of 3.90 m/s before coming to rest. The coefficient of friction between the runner and the ground is 0.700.
(a)Find the change in mechanical energy of the runner (in J) from the start of the slide to when she comes to rest.
(b)How far (in m) does the runner slide?
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