force, A push or a pull, push, I _________ my chair in after I eat., pull, I _________ the plug out of the wall., Newton, Sir Isaac _________ discovered forces and motion., gravity, The force that holds things to the Earth's surface., pull, When I open the door, I _______ the handle., push, When I close the door, I _______ it shut., push, When I shoot a basketball, I _______ it.

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