Newton's Laws of Motion - Research Article from World of Mathematics

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First law of motion

Galileo's observation that without friction a body would tend to move forever challenged Aristotle's notion that the natural state of motion on Earth was one of rest. Galileo deduced that it was a property of matter to maintain its state of motion, a property he called inertia. Newton, grasping the meaning of inertia and recognizing that Aristotle's reference to what keeps a body in motion (outside influence) really should have been what changes a body's state of motion, set forth a first law of motion which states: A body at rest remains at rest or a body in constant motion remains in constant motion along a straight line unless acted on by an external influence, called force.

Examples of the first law

(1.) Why use seat belts? Riding in a car you and the car have the same motion. When the brakes are...

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This section contains 2,081 words
(approx. 7 pages at 300 words per page)
Buy the Newton's Laws of Motion Encyclopedia Article
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World of Mathematics
Newton's Laws of Motion from World of Mathematics. ©2005-2006 Thomson Gale, a part of the Thomson Corporation. All rights reserved.
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