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A man of mass 75 kg is pushing a heavy b...

A man of mass `75 kg` is pushing a heavy box on a flat floor. The coefficient of kinetic and static friction between the floor and the box is `0.20`, and the coefficient of static friction between the man's shoes and the floor is `0.80`. If the man pushes horizontally, what is the maximum values (in `kg`) of the box he can move?

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