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You can't calculate the force from the rate at which work is done.

10 joules in 20 seconds could be:

-- 1 newton pushing along at 50 centimeters per second, or

-- 0.1 newton pushing 5 meters per second, or

an infinite number of other possibilities.

From the data given in the question, all we know is that the 'power' is 1/2 watt.

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15y ago

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