3. A skateboarder moves uniformly at 3.5 m/s horizontally when he arrives at the top of a hill (angle of 24"). The coefficient of friction of the hill is 0.25. If he rolls down a distance of 7.5m how fast will be be moving at the bottom? 7.5m

3. A skateboarder moves uniformly at 3.5 m/s horizontally when he arrives at the top of a hill (angle of 24"). The coefficient of friction of the hill is 0.25. If he rolls down a distance of 7.5m how fast will be be moving at the bottom? 7.5m

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter12: Rotation I: Kinematics And Dynamics

Section: Chapter Questions

Problem 77PQ

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Concept explainers

Static and Kinetic Friction

Kinetic friction comes into existence when there are moving surfaces means in other words we can say that the force which comes into existing between moving surfaces is known as kinetic friction.

Question

3. A skateboarder moves uniformly at 3.5 m/s horizontally when he arrives at the top
of a hill (angle of 24°). The coefficient of friction of the hill is 0.25. If he rolls
down a distance of 7.5m how fast will be be moving at the bottom?
7.5m

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