Newton's first law


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Related to Newton's first law: Newton's law of gravitation, Law of inertia

Newton's first law

[′nüt·ənz ′fərst ′lȯ]
(mechanics)
The law that a particle not subjected to external forces remains at rest or moves with constant speed in a straight line. Also known as first law of motion; Galileo's law of inertia.
References in periodicals archive ?
Against the views of these philosophers, one begins to see that inertia is an inherent principle and is natural in the Aristotelian sense by considering why Newton's First Law of Motion is also called the principle of inertia.
Newton's First Law can be deduced from the law of inertia stated in section 3 and specifically from equations (8) and (9), or from corollary II.
Law Definition Example Newton's First Law Newton's Second Law Newton's Third Law
Explain how Newton's first law of motion allows heavier yo-yos to sleep longer.
As Shaun White rides down a half-pipe, Newton's first law predicts that he will keep moving unless acted on by an outside force, like friction.
According to Newton's first law of motion, when a race car slams into the wall, the driver's body continues flying at a constant velocity until a force--such as the driver's seat belt--acted on it.
Meanwhile, thanks to Newton's first law of motion (see Nuts & Bolts, below), his body tried to continue on a straight path.
Newton's first law of motion describes it this way: An object moving at a steady velocity (speed and direction) keeps moving at that velocity unless acted on by an outside force.
The answer begins with Newton's first law of motion, or the law of inertia, which states that moving objects keep moving in a straight line unless acted on by an outside force.
Helping her maneuver is Newton's First Law of Motion
According to Newton's first law of motion, an object at rest remains at rest unless acted upon by an outside force.
Wrestlers in the photo at left illustrate Newton's first law, the law of inertia: An object in motion will keep moving unless something stops it.