| Term | Definition |
|
motion |
distance from another object is changing |
|
reference point |
place or object used for comparasin if something is in motion |
|
international system of units (SI) |
some system of measurement used internationally |
|
meter |
SI unit of length: a little bit longer than a yard |
|
speed |
distance an object travels per unit of time |
|
average speed |
a calculation of speed |
|
instantaneous speed |
the rate at which an object is moving at a given instant time |
|
velocity |
speed in a given direction |
|
slope |
steepness of a line on a graph |