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A hollow ball of mass 2.88 kg and radius 0.309 m sits at rest on top...

A hollow ball of mass 2.88 kg and radius 0.309 m sits at rest on top of a hill of height 6.88 m. The ball can either slide down the hill without rolling or roll down without slipping. What is the difference in the ball's speed (in m/s) at the bottom of the hill between these two scenarios?

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