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Newton's laws of motion

Newton's Laws

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Newton?s Laws Sir Isaac Newton Newton?s First Law Gravity Force This picture demonstrates Newton?s first law as it shows an object at rest. The reason it is at rest however, is because there are balanced forces at work. The gravity is pulling the rocket down, but that force is counter-acted by the equal force created by the base, and therefore the ground on which the rocket sits. Obviously, there are other forces at work stopping the rocket from tipping over when pushed by things such as wind, such as the red tower.

Newton's 3 laws

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I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. II. The relationship between an object's mass m, its acceleration a, and the applied force F is F = ma. Acceleration and force are vectors III. For every action there is an equal and opposite reaction.
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Newton Second Law

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Newton was the first to mathematically express the relationship between force and momentum. Some physicists interpret Newton's second law of motion as a definition of force and mass, while others consider it to be a fundamental postulate, a law of nature. Either interpretation has the same mathematical consequences, historically known as "Newton's Second Law": The quantity mv is called the (canonical) momentum. The net force on a particle is thus equal to rate change of momentum of the particle with time. Since the definition of acceleration is a = dv/dt, the second law can be written in the simplified and more familiar form:
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