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A box with mass m=5 (kg) is being pulled with force F=25 (N) horizontally and moves...

A box with mass m=5 (kg) is being pulled with force F=25 (N) horizontally and moves with constant speed. (g = 10 m/s2) a) How much is the coefficient of kinetic friction? b) How much is the Normal force excreted from surface to the box? c) If the box moves 10 (m) in 20 seconds, calculate the work done by force F and by friction. What is the power of Force F?

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