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A worker pushes a 15 kg box up a ramp. - Calculate the work done in pushing the crate at a constant velocity 4.5 m along the ramp. Assume the coefficient of kinetic friction between the crate and the ramp is 0.18. - Calculate the work donje by the worker and by friction, and calculate the total work done as the worker pushes the crate up 4.5 m up the ramp.
Sagot :
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