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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 and direction
overall velocity for a period of time; includes average speed and direction
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
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); another term for constant velocity
device that indicates distance traveled by a vehicle (such as a car or bike)