5.13 A box is pushed at a constant velocity 10 m along a floor. The frictional force between the box and the floor is 120 N. At what rate must work be done on the box to complete the push in: (a) 60 s (b) 45 s (c) 30 s (d) 10 s (e) 5 s (f ) 1 s

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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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5.13 A box is pushed at a constant velocity 10 m along a floor. The frictional force between the box and the floor is 120 N. At what rate must work be done on the box to complete the push in: (a) 60 s (b) 45 s (c) 30 s (d) 10 s (e) 5 s (f ) 1 s

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