6. A boy pulls a sled with a mass of 20 kg horizontally over a surface with a coefficient of sliding friction of 0.20. It takes him 10 minutes to pull the sled 100 yards. What is his average power output over these 10 minutes? a. 5.77 W b. 5.67 W c. 5.89 W d. 5.98 W

6. A boy pulls a sled with a mass of 20 kg horizontally over a surface with a coefficient of sliding friction of 0.20. It takes him 10 minutes to pull the sled 100 yards. What is his average power output over these 10 minutes? a. 5.77 W b. 5.67 W c. 5.89 W d. 5.98 W

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter9: Energy In Nonisolated Systems

Section: Chapter Questions

Problem 7PQ

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Question

a. 122 W
b. 113 W
c. 117 W
d. 120 W
6. A boy pulls a sled with a mass of 20 kg horizontally over a surface with a coefficient of sliding friction
of 0.20. It takes him 10 minutes to pull the sled 100 yards. What is his average power output over
these 10 minutes?
a. 5.77 W
b. 5.67 W
c. 5.89 W
d. 5.98 W

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