The state which one object's distance from another is changing
A place or object used for comparison to determine if an object is in motion
International System Of Units(SI)
System used by scientist to measure the properties of matter.
The basics SI unit of lenght
distance travelled per unit time
The overall rate of speed at which an objects moves .
the speed of an object at one instant of time
speed in a given direction
the steepness of a line on a graph, equal to its vertical change divided by its horizontal change
The rate at which velocity changes