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Chapter 11 Vocab
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 or reference |
distance | the length of a path between two points |
vector | a quantity that has magnitude and direction |
resultant vector | the sum of two or more vectors |
speed | the ratio of the distance an object moves to the amount of time it moves. |
average speed | speed of the total distance traveled |
instantaneous speed | the rate an object is moving at a given moment in time |
velocity | the speed and direction in which an object moves |
acceleration | the rate at which velocity changes |
free fall | the movement of an object toward earth because of gravity |
constant acceleration | a steady change in velocity |
linear graph | the displayed data forms a straight line on a graph |
nonlinear graph | a curve that connects the data points plotted. |