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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. |