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09-10-2017
Physics

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A child carries a 3N book at a constant velocity 4 meters across a horizontal floor. What is the net work done?

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17-10-2017

Note that 4 m (meters) has the units of distance, not velocity.

By definition,
Work = Force x Distance
Therefore if a 3 N book is carried over a distance of 4 m, the work done is
3 *3 4 = 12 J

Answer: 12 J

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