Do the following problems, drawing a picture for each. Then write your answers.
- You pull a wagon carrying your younger brother 1000 meters (1 km) to the store using 20 newtons of force the whole way. It takes you 15 minutes to get there. How much power did you generate, in joules per minute? In watts?
- You and a friend move a grand piano across the living room, exerting 25 newtons of force and performing 175 joules of work. It takes you 14 seconds. How far did you move the piano? How much power did you generate, in watts (joules/sec)?