“Every body continues in its state of rest, or of uniform motion in a right line, unless it is compelled to change that state by forces impressed upon it.”

— Isaac Newton, book Philosophiae Naturalis Principia Mathematica

Laws of Motion, I
Philosophiae Naturalis Principia Mathematica (1687)

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Isaac Newton171

British physicist and mathematician and founder of modern c… 1643–1727

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