First of all a cartoon. You can leave out the initial if you have difficulty with English and move the cursor to 0.42 s approximately. You'll see an athlete who is lifting weights, exercising like you've already seen, and calculate the work it does by moving 1m or 2m weights, and you will see how varied the work on the Moon, where gravity is about 1 / 6 of ours. Then you will see the case dell'omino desperately trying to move the car and the clown who calls for a taxi. Which one does work?
Finally you will see that the units are Nxm, ie joule:
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