NEWTON'S LAWS OF MOTION
An object in motion tends to stay in motion.
Every action has an equal and opposite reaction.
Motion continues unless there is resistance.
These laws continued to be seen as having universal relevance
until Quantum Mechanics came along, and determined the laws
to be different at different scales. Nonetheless, Newton's Laws of
Motion tend to remain accurate at what we call intermediate
scales, or some say, above the atomic level.
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