(3%) Problem 15: A 85-kg man pushes a crate 2.5 m up along a ramp that makes an angle of 15.5 with the horizontal. He exerts a force of 485 N on the crate parallel to the ramp and moves it at a constant speed. theexpertta.com > % Calculate the work, in joules, that the man performs to cause the crate and himself to move up the ramp