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Coaster's motion
| Term | Definition |
|---|---|
| motion | The state in which one objects distance from another is changing. |
| reference point | A place or object used for comparison to determine if an object is in motion. |
| International System of units | A system of measurement based on multiples of ten and on established measures of mass, length, and time. |
| distance | The length of the path between two points. |
| speed | The distance an object travels per unit of time. |
| average speed | The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by a total time. |
| instantanious speed | The speed of an object at one instant of time. |
| velocity | Speed in a given direction. |
| slope | The steepness of a graph line; the ratio of the vertical change( the rise) to the horizontal change. |
| acceleration | The rate of which velocity changes. |