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20. takes 4.2 s for you to push a box across the floor at constant velocity, a distance of 16 m. What is your power output? The Hk with the floor is 0.45.

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Ans Power Farce Xveloctty .4sxmx9.8- 4.41 m For co sta ut velocity force= FncHm] Ce = Frte Po(4-41 m)x 4.2 m→ mass of block.

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