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A child and sled with a combined mass of 54.0 kg slide down a frictionless slope. If the sled starts from rest and has

A child and sled with a combined mass of 54.0 kg slide down a frictionless slope. If the sled starts from rest and has a speed of 2.10 m/s at the bottom, what is the height of the hill? m Need Help? Watch It

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