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chapter 11 vocab

TermDefinition
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 is the length of a path between two points
vector is a quantity that has magnitude and direction
resultant vector the vector sum of two or more vectors
speed the ratio of distance an object moves the amount of time the object moves
average speed 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 at 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 is a steady change in velocity
linear graph in which the displayed data from straight-line parts
nonlinear graph a curve connects the data points that are plotted
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