2. Robin Hood pulls an arrow back in a bow. It is pulled back 35 cm with an average force of 160N. What was the work done on the arrow to get it into position? Show your equation and work the same as in the lesson. 3. If you lifted an 80kg rock onto a trailer that is 2.0 meters off the ground, what is the work done? Show your equation and work the same as in the lesson. 4. Two students try to move a heavy box. One pushes with a force of 80N while the other pulls with a force of 40N in the same direction. What is the work done by each boy after the box is moved 10 meters? Show your equation and work the same as in the lesson