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whocares:

A bowling ball is hanging on a rope, 1.0 m above the floor. A teacher pulls the bowling ball towards his chest to a height of 2.5 m and lets go. The ball swings away from the teacher and swings back. If kinetic and potential energy are conserved, what is the height of the bowling ball when it swings back to the teacher's chest?

Vocaloid:

Recall: potential energy = U = mgh If potential energy is conserved what does that tell you about the initial and final heights?

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