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Phys Sci - Chap 11
vocabulary words
Question | Answer |
---|---|
frame of reference | system of objects that aren't 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: distance over time |
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 |
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 the displayed data form a straight line |
nonlinear graph | graph in which the displayed data form a curved line |