(Answered) A child and sled with a combined mass of 527 kg slide down

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A child and sled with a combined mass of 52.7 kg slide down a frictionless hill that is 10.9 m high at an angle of 29? from horizontal. The acceleration of gravity is 9.81 m/s2 . If the sled starts from rest, what is its speed at the bottom of the hill? Answer in units of m/s.

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