A 78-kg skateboarder grinds down a hubba ledge that is D m long and inclined at M° above the horizontal. Kinetic friction dissipates five-eigths of her initial potential energy to thermal and sound energies. a. What is the coefficient of kinetic friction between her skateboard and the ledge surface? c. What is the horizontal component of the normal force? d. What is the vertical component of the normal force?

A 78-kg skateboarder grinds down a hubba ledge that is D m long and inclined at M° above the horizontal. Kinetic friction dissipates five-eigths of her initial potential energy to thermal and sound energies. a. What is the coefficient of kinetic friction between her skateboard and the ledge surface? c. What is the horizontal component of the normal force? d. What is the vertical component of the normal force?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter8: Potential Energy And Conservation Of Energy

Section: Chapter Questions

Problem 23P: A cat’s crinkle ball toy of mass 15 g is thrown straight up with an initial speed of 3 m/s. Assume...

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