Calculate the work done by a 71 kg man who pushes a crate 7 m up along a ramp that makes an angle of 21° with the horizontal. He exerts a force of 480 N on the crate parallel to the ramp and moves at a constant speed. ramp. Be certain to include the work he does on the crate and on his body to get up the AJ Show hint

Calculate the work done by a 71 kg man who pushes a crate 7 m up along a ramp that makes an angle of 21° with the horizontal. He exerts a force of 480 N on the crate parallel to the ramp and moves at a constant speed. ramp. Be certain to include the work he does on the crate and on his body to get up the AJ Show hint