Henry can lift a 200 N load 20 m up a ladder in 40 s. Ricardo can lift twice the load up one-half the distance in the same amount of time.Which comparison between Ricardo and Henry is correct?

Henry does 200 N × 20 m = 4,000 J of work. Ricardo lifts twice the load, so his force is 400 N, over half the distance, 10 m; he also does 400 N × 10 m = 4,000 J of work. Since they do the same work in the same 40 seconds, they have the same power output. Thus, Ricardo exerts greater force but does the same work and has the same power as Henry.

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