A 7.5-kg otter slides down a hill, starting from rest at the top. The sloping surface of the
hill is 8.8 m long, and the top is 6.5 m above the base. If the speed of the otter at the
bottom of the hill is 9.2 m/s, how much energy was lost to nonconservative forces on the
hill?
Correct Answer:
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