Repeat Question 21 for the power needed instead of the work.
21. Suppose you lift a suitcase from the floor to a table. The work you do on the suitcase depends on which of the following: (a) whether you lift it straight up or along a more complicated path, (b) the time the lifting takes, (c) the height of the table, and (d) the weight of the suitcase?
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As power is equal to the rate at which work is done, it depends on the force required, the displacement, and the time.