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if an object with a mass of 248kg is lifted 76 meters in 18 seconds, how much power is used?

Sagot :

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Explanation:

power = 1/2 mass × velocity^2 >>1

velocity = distance / time = 76 /18 = 4.2m

then power = 1/2 × 276 × (4.2)^2 = 138 × 17.64 = 2,434.3 jules.

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