A 0.75-kg block slides on a rough horizontal table top. Just before it hits a horizontal ideal spring its speed is 3.5 m/s. It compresses the spring 5.7 cm before coming to rest. If the spring constant is 1200 N/m, the thermal energy of the block and the table top must have: O a. decreased by 2.6 J O b. not changed O c. decreased by 1.9 J O d. increased by 2.6 J O e. increased by 1.9 J

A 0.75-kg block slides on a rough horizontal table top. Just before it hits a horizontal ideal spring its speed is 3.5 m/s. It compresses the spring 5.7 cm before coming to rest. If the spring constant is 1200 N/m, the thermal energy of the block and the table top must have: O a. decreased by 2.6 J O b. not changed O c. decreased by 1.9 J O d. increased by 2.6 J O e. increased by 1.9 J

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 10PE: (a) How fast must a 3000-kg elephant move to have the same kinetic energy as a 65.0-kg sprinter...

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Question

A 0.75-kg block slides on a rough horizontal table top. Just before it hits a horizontal ideal spring its speed is 3.5 m/s. It compresses the spring 5.7 cm before coming to rest. If the spring constant is 1200 N/m, the thermal energy of the block
and the table top must have:
O a. decreased by 2.6 J
O b. not changed
O c. decreased by 1.9 J
O d. increased by 2.6 J
O e. increased by 1.9 J

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