An object's change in position relative to a reference point.

A place or object used for comparison to determine if an object is in motion

A system of measurement based on multiples of ten and on established measures of mass, length, and time. SI units

SI unit of length. A little longer than a yard

Distance traveled per unit time

The overall rate of speed at which an object moves; calculated by dividing the total distance an object travels by the total time.

The rate at which an object is moving at a given moment in time

A variable that tells you both speed and direction, Speed in a given direction

the steepness of a line on a graph, rise over run (change in y over the change in x)

suggests that the earth's surface is divided into a dozen or so slow moving pieces of the earth's surface

Change in velocity divided by the time it takes for the change to occur

100 cm

10 mm

1000 m

The length of a path between two points