In the late 1600's there was a man who tried to help us understand motion his name was Isaac Newton. He figured out things other people didn't even realize was there. He had three laws of motion, the first one was when an object is at rest it stays at rest and if an object is in motion it stays in motion unless an unbalanced force is acted upon it. The second law is F=m x a or Force=mass x acceleration. And the third law is if there is an action force there will be an equal reaction force.
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