1. A force of 80.0 N is used to pull a box through a distance of 60 m. If the force makes an angle of 40° with the horizontal, how much work is done? 2. How much work is required to accelerate a 1000 kg car from 20 m/s to 45 m/s? 3. An object of mass 2 kg traveling at 5.00 m/s enters a region of ice where the coefficient of kinetic friction is 0.35. Use the work energy theorem to find the distance the object travels before coming to rest.

1. A force of 80.0 N is used to pull a box through a distance of 60 m. If the force makes an angle of 40° with the horizontal, how much work is done? 2. How much work is required to accelerate a 1000 kg car from 20 m/s to 45 m/s? 3. An object of mass 2 kg traveling at 5.00 m/s enters a region of ice where the coefficient of kinetic friction is 0.35. Use the work energy theorem to find the distance the object travels before coming to rest.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter7: Work, Energy, And Energy Resources

Section: Chapter Questions

Problem 8PE: Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 90.0 kg, down a 60.0°...

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