A man exerts 1000 Newtons of force to move a very large couch 2 meters. If it takes him 5 seconds to move the couch, how much power does it require?

Work = (force) x (distance)

The work he did: Work = (700 N) x (4m) = 2,800 joules

The rate at which

he did it (power) : Work/time = 2,800 joules/2 sec

= 1,400 joules/sec

= 1,400 watts

= 1.877 ... horsepower (rounded)

Explanation:

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