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The work done by applying a force in the same direction of motion is force times distance. So in this case W = F x d = 250 x 15 = 3750 J. Power is work divided by time:

P = 3750 J / 10 s = 375 J/s

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13y ago
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12y ago

Total energy is (1000 x 4) = 4,000 newton-meters = 4,000 joules

Power = energy/time = 4,000 joules/2 seconds = 2,000 joules per second = 2,000 watts.

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12y ago

250 w

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Q: How much power is expended if you lift a 100 newton rock 5 meters in 2 seconds?
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