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Chp11Vocab_Ernst
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 | Average Speed= distance/time |
instantaneous speed | the rate at which an object is moving at a given moment in time |
velocity | the speed and direction an object is moving |
acceleration | the rate that velocity changes |
free fall | acceleration due to change |
constant acceleration | a steady change in velocity |
linear graph | the displayed data form straight lines |
nonlinear graph | the data is connected by curves |