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Motor A does 240 J of work in 24 seconds. Calculate power.
Motor B does 240 J of work in 8 seconds. Calculate power.
Which motor did more work? Which motor was more powerful?
True or false: “A more powerful motor does more work”?
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GPT-5 mini
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Power = work / time.
- Motor A: P = 240 J / 24 s = 10 W.
- Motor B: P = 240 J / 8 s = 30 W.
Which motor did more work? Neither — both did 240 J.
Which was more powerful? Motor B (30 W).
True or false: “A more powerful motor does more work”? False as stated. Power is the rate of doing work, so a more powerful motor does more work per second, but it does not necessarily do more total work unless run for the same time (or longer). In this example motor B is more powerful but did the same total work as motor A.
- Motor A: P = 240 J / 24 s = 10 W.
- Motor B: P = 240 J / 8 s = 30 W.
Which motor did more work? Neither — both did 240 J.
Which was more powerful? Motor B (30 W).
True or false: “A more powerful motor does more work”? False as stated. Power is the rate of doing work, so a more powerful motor does more work per second, but it does not necessarily do more total work unless run for the same time (or longer). In this example motor B is more powerful but did the same total work as motor A.
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