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Motion
Mrs. Anhold's Physical Science Class
| Term | Definition |
|---|---|
| velocity | the speed in a given direction |
| speed | the rate of motion |
| length | the distance of anything as measured from end to end |
| motion | the change of position |
| distance | the amount of space between two things |
| acceleration | speeding up |
| deceleration | slowing down |
| rotation | spinning or turning around |
| vibrating | things that move back and forth |
| spinning | to turn around rapidly |
| constant acceleration | a steady increase in speed |
| gravity | the force of attraction between any two things made of matter |
| friction | the rubbing of the surface of one object against another |
| air resistance | resistance created on an object moving through the air |
| mass | a measure of how much matter is within something |
| matter | the stuff that any physical object is made of |
| force | a push or pull |
| gravity | the force of attraction between any two things made of matter |
| exerting | to put into use |
| friction | the rubbing of the surface of one object against another |
| Newton's 1st law | objects in motion stay in motion and objects at rest stay at rest unless acted on by an outside force |
| inertia | the tendency of an object to resist any change in motion (1st law) |
| Newton's 2nd law | an object's acceleration depends on the objects mass and the size of the force acting on it. (F=M x A) |
| Newton's 3rd law | for every action there is an equal and opposite reaction |