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A block is attached to a spring and is free to slide on a horizontal, frictionle

ID: 2194384 • Letter: A

Question

A block is attached to a spring and is free to slide on a horizontal, frictionless surface. The block is pulled to the right and released from rest. Upon release, the block moves to the left. Which one of the following statements concerning the block-spring system is true? The KE of the block decreases and PE of the spring increases. The KE of the block increases and PE of the spring decreases. The KE of the block and PE of the spring both increase. The KE of the block and PE of the spring both decrease. The KE of the block and PE of the spring, each stay constant.

Explanation / Answer

The KE of the block increases and PE of the spring decreases

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