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chapter 11
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 referance |
distance | the length of a path between two distances |
vector | a quantity that has a direction related to it |
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 the distance |
instantaneous speed | the rate at which an object is moving at a given moment of time |
velocity | the speed and direction an object is moving measured relative to a reference point |
acceleration | the rate at which velocity changes |
free fall | the movement of an object towards earth because of gravity |
constant acceleration | the steady change in velocity |
linear graph | a graph in which the displayed data form a straight line |
non linear graph | a graph in which the displayed data forms a curved line |