A sled and rider with a combined weight of 62.0 kg are at rest on the top of a hill 18.0 m high. (Enter your answers in J.) (a) What is their total energy at the top of the hill? J (b) Assuming there is no friction, what would the total energy be on sliding halfway down the hill? J (c) What would the total energy be at the bottom of the hill? J

A sled and rider with a combined weight of 62.0 kg are at rest on the top of a hill 18.0 m high. (Enter your answers in J.) (a) What is their total energy at the top of the hill? J (b) Assuming there is no friction, what would the total energy be on sliding halfway down the hill? J (c) What would the total energy be at the bottom of the hill? J