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?

Lifting Weights: On earth it takes about 10 Newton-meters (N-m) of energy to raise a 1 kilogram mass to a height of 1 meter. Since 1 N-m equals 1 Joule, that's 10 Joules. If it takes 1 second to lift the weight 1 meter, than you have converted 10 Joules of energy to potential energy in one second.

Hope this helps!

friction

explanation:

they us to move forward and backwards