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7.5.3 Work done by a variable force


Watch the following video for work done by a variable force:


1. A single force acts on a 3.0 kg particle-like object whose position is given by x 3.0t 4.0t2 1.0t3, with x in meters and t in seconds. Find the work done on the object by the force from t 0 to t 4.0 s.

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