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A sled and rider with a combined weight of 57.0 kg are at rest on the top of a hill 29.0 m high. (Enter your

A sled and rider with a combined weight of 57.0 kg are at rest on the top of a hill 29.0 m high. (Enter your answers in J.)

(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?

(c)What would the total energy be at the bottom of the hill?

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