| A | B |
|---|
| position | a certain place |
| motion | any change of position |
| frame of reference | all the things around you that you can sense and use to describe motion |
| relative motion | motion that is described based a frame of reference |
| speed | how fast something is moving |
| force | a push or a pull; it transfers energy |
| acceleration | any change in the speed or the direction of an object's motion |
| newton | metric unit of force; the amount of energy needed to pick up an apple |
| gravity | the force that pulls all objects toward each other |
| weight | measure of the force of gravity on an object |
| friction | the force that keeps objects that are touching each other from sliding past each other |
| To know the speed that something is traveling you need to know the... | The distance traveled and the time it took |
| spring scale | an instrument used to measure force |
| An object on the moon | weighs less than it would on earth |
| Examples of acceleration | increasing speed, slowing down, and turning |
| These cause motion to be stopped or started | forces |
| Can I have that? | Something Mr. Browne always says |
