Starting from rest, an intern pushes a 42-kggurney 12 m down the hall with a constant force of 80 N directed downward at an angle of 35 with respect to the horizontal. Ignore friction.
Part A: What is the work done by the intern on the gurney during the 12-m trip?
Part B: How fast is the gurney going when it has moved 12 m?
Part C: How much time elapses during the 12-m journey?