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Chapter 11 Vocab
Question | Answer |
---|---|
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 of 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 straight-line parts. |
nonlinear graph | A curve connects the data points that are plotted. |