science ch 9
About this set
Created by:
tonyafoshee on February 21, 2012
Log in to favorite or report as inappropriate.
Order by
19 terms
Terms | Definitions |
|---|---|
 energy | ability to do work |
| potential energy | stored energy |
| kinetic energy | energy due to motion |
| mechanical energy | the ability to make something move |
| motion | change of an objects position |
| refernce point | a fixed,unmoving object needed to determine whether another object has changed position |
| distance | measuring an objects position at different times |
| speed | rate |
| instantaneous speed | cars speed at one particular moment |
| velocity | distance an object moves over a given amount of time in a certain direction |
| acceleration | change velocity during a period of time |
| force | a pull or push |
| friction | a force that keeps objects from moving against other objects |
| momentum | mass and velocity (speed and direction) of an object |
| first law of motion | an object needs to stay at the same velocity unless another force causes it to change |
| inertia | the resistance to a change in motion |
| gravity | pull of one object on another |
| second law of motion | states that force is equal to an objects mass and the acceleration of the object |
| third law of motion | the law of action and reaction |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.