A college student earning some summer money pushes a lawn mower on a level lawn with a constant force of 450 N at an angle of 20 downward from the horizontal. How far does the student push the mower in doing 2.5x10 J of work? 15.91 A 1500-kg race car can go from 0 to 90 km/h in 5.0 s. What average power is required to do this? 37500