A sled and rider with a combined weight of 46 kg are at rest on the top of a hill 29 m high.
(a) What is their total energy at the top of the hill?
(b) Assuming there is no friction, what would the total energy be on sliding halfway down the hill?

A sled and rider with a combined weight of 46 kg are at rest on the...
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A child and sled with a combined mass of
52.0 kg slide down a frictionless slope. If the sled starts from
rest and has a speed of 3.70 m/s at the bottom, what is the height
of the hill?
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