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