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A motor operates at 200 W, how high could it lift 15 kg in a time of 8.0s? Homer lifts a 20 kg box directly

A motor operates at 200 W, how high could it lift 15 kg in a time of 8.0s?

Homer lifts a 20 kg box directly upwards and places it onto a shelf 1.5 m above the ground. How much work did Homer do?

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