# physics

A child and a sled have a combined mass of 87.5 kg slides down a friction-less hill that is 7.34 m high. If the sled starts from rest, what is the velocity of the sled at the bottom of the hill?

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1. V^2 = Vo^2 + 2g*h
V^2 = 0 + 19.6*7.34 = 143.864
V = 12 m/s.

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posted by Henry

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