ST4.10 Lifts

An engineer is designing a new lift for a building. The original design used a motor capable of lifting 1000 kg through a distance of 20 m in 30 s, at constant speed. The new design must use a motor that can lift 800 kg through 30 m in 20 s, at constant speed. Compared to the old motor, the new one must
Correct
Incorrect
Incorrect
Incorrect
Incorrect

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