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Chapter 11 Vocab.
| Term | Definition |
|---|---|
| frame of reference | system of objects that are not moving with respect to one another. |
| relative motion | movement in relation to a frame of reference. |
| distance | length of the path between two points. |
| vector | quantity that has a direction associated with it. |
| resultant vector | vector sum of two or more vectors. |
| speed | ratio of the distance an objects moves to the amount of time the object moves. |
| average speed | total distance traveled divided by the time it takes to travel that distance. |
| instantaneous speed | rate at which an object is moving at a given moment in time. |
| velocity | speed and direction an object is moving, measured relative to a reference point. |
| acceleration | rate at which velocity changes. |
| free fall | movement of an object toward Earth because of gravity. |
| constant acceleration | steady change in velocity. |
| linear graph | graph in which the displayed data form a straight line. |
| nonlinear graph | graph in which the displayed data form a curved line. |