A factory worker pushes a 28.4 kg crate a distance of 4.5m along a level floor at constant velocity by pushing downward at an angle of 28 degree…

A factory worker pushes a 28.4 kg crate a distance of 4.5m along a level floor at constant velocity by pushing downward at an angle of 28 degree below the horizontal. The coefficient of kinetic friction between the crate and floor is 0.25.

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