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Newton's Laws
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Term | Definition |
---|---|
inertia | the tendency of all objects to resist any change in motion |
Newton's first law of motion | an object at rest remains at rest, and an object in motion remains in motion at a constant speed and in a straight line unless acted on by an unbalanced force |
Newton's second law of motion | the acceleration of an object depends on its mass and the amount of force applies |
Newton's third law of motion | all forces act in pairs, for every action force there is an equal and opposite reaction force |
friction | the common unblanced force acting on objects in motion |
equation for Newton's second law of moition | F = m x a |
gravity | the force of attraction between 2 objects |
mass | the amount of matter in an object |
weight | the amount of gravitational force on an object |
centripetal force | the unbalanced force that causes an object to move in a circular path |
projectile motion | the curved path an object follows, combination of horizontal and vertical motion |
terminal velocity | when the force of gravity is equal to the force of air friction on a falling object, net force is 0 N |
orbit | when one object in space makes a circular path around another due to gravity and horizontal motion |
law of universal gravitation | all objects in the universe are attracted to each other |