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.