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Chapter 11 GASKINS
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 | 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 in 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 a straight-line parts |
nonlinear graph | a curve connects the data points that are plotted |