continuous change in the position of an object (as judged by a reference point)
object or location used to judge or measure motion; considered to be stationary
rate at which distance changes
overall speed for a period of time; calculated as distance divided by time
speed at a particular instant (moment in time)
speed that does not change
speed + direction (for straight line motion)
overall velocity for a period of time; includes average speed + direction (for straight line motion)
velocity at a particular instant (moment in time)
occurs when speed and direction do not change
1. rate at which speed or velocity changes 2. occurs whenever velocity (speed or direction) changes
occurs when a forward moving object speeds up
occurs when a forward moving object slows down
device that indicates the instantaneous speed of a vehicle
another word for negative acceleration
occurs when there is no change in speed or direction (no acceleration)
the steepness of a line graph (in math, the rise over the run)
how far an object travels; the length of the path of motion
the duration of an event; how long something lasts
answers the question, "which way?"; must be provided when describing velocity
used to show the speed of a moving object; always set up with distance on the y-axis and time on the x-axis; slope = speed
used to show the acceleration of a moving object; always set up with speed on the y-axis and time on the x-axis; slope = acceleration
symbol is /; means division
same as average speed
device that indicates distance traveled by a vehicle (such as a car or bike)
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