8 Forces and Motion

11 terms by lauriep

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gravity

the force of attraction between all masses in the universe

inertia

the tendency of a body to resist any change in its motion; it stays at rest or in motion unless acted upon by an external force

force

a push or a pull that acts on an object

motion

the act of changing location from one place to another

mass

the amount of matter in an object

weight

A measure of the amount of force of gravity on an object

acceleration

the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change

speed

the ratio of the distance an object moves to the amount of time the object moves

Newton's First Law of Motion

an object at rest will stay at rest and an object in motion will stay in motion unless acted on by an outside force

Newton's Second Law of Motion

The acceleration of an object depends on the mass of the object and the amount of force applied.

Newton's Third Law of Motion

for every action there is an equal and opposite reaction

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