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A constant force F is pushing a 5 kg mas...

A constant force F is pushing a 5 kg mass on a horizontal surface at a constant velocity of 2 m/s. The coefficient of friction between the surface and the mass is 0.3 (Take `g = 10 m/s^2`). If F acts along the direction of motion, the rate at which F is doing work (in watt)

A

30 J

B

6

C

10 J

D

30

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