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Physics
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Newton's Laws of Motion
๐ฌ๐งEnglandยท1687
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๐Newton's Laws of Motion
Three laws that govern all motion on Earth and in space; the foundation of classical mechanics
Key Facts
- 11st Law (Inertia): a body at rest stays at rest unless acted upon by a net external force
- 22nd Law: F = ma โ force equals mass times acceleration; explains how rockets, cars and falling objects move
- 33rd Law: every action has an equal and opposite reaction โ explains thrust, swimming, and recoil
๐ก Newton reportedly discovered gravity after seeing an apple fall โ though the moon, not the apple, was the key insight that led to the inverse-square law
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