A sled is given a push across a horizontal surface. The sled has a mass m, the push gives it an initial speed of 3.40 m/s, and the coefficient of kinetic friction between the sled and the surface is 0.150. (a) Use energy considerations to find the distance (in m) the sled moves before it stops. 7.85 X From conservation of energy we have AE system = T. The change in energy of the system is the change in kinetic energy of the sled and the only energy transfer is the work done by ΔΕ, friction. Remember to express the work done by friction as a scalar product. m (b) What If? Determine the stopping distance (in m) for the sled if its initial speed is doubled to 6.80 m/s. 31.42 x How can you modify the results of your work for part (a) to determine the new distance? m

A sled is given a push across a horizontal surface. The sled has a mass m, the push gives it an initial speed of 3.40 m/s, and the coefficient of kinetic friction between the sled and the surface is 0.150. (a) Use energy considerations to find the distance (in m) the sled moves before it stops. 7.85 X From conservation of energy we have AE system = T. The change in energy of the system is the change in kinetic energy of the sled and the only energy transfer is the work done by ΔΕ, friction. Remember to express the work done by friction as a scalar product. m (b) What If? Determine the stopping distance (in m) for the sled if its initial speed is doubled to 6.80 m/s. 31.42 x How can you modify the results of your work for part (a) to determine the new distance? m

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Description: A sled is given a push across a horizontal surface. The sled has a mass m, the push gives it an initial speed of 3.40 m/s, and the coefficient of kinetic friction between the sled and the surfaceis 0.150.(a) Use energy considerations to find the dis

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 7PE: A shopper pushes a grocery cart 20.0 m at constant speed on level ground, against a 35.0 N...

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