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Reference point
the starting point you chose to describe the location, or position, of an object

Position
an object's distance and direction from a reference point

Reference direction
a direction that you choose from a starting point to describe an object's position

Meter
measure of distance equal to 100 centimeters or 1,000 millimeters, used as the standard unit of length in the metric system

Motion
the process of changing position

Displacement
the difference between the starting position and the final position

distance
how far an object moves from one position to another measured along its path

Speed
the distance an object travels per unit of time

Velocity
the speed and direction of a moving object

Vector
A quantity that has magnitude and direction

feet
unit of measurement

Centimeter (cm)
A metric unit of length equal to 0.01 of a meter

Kilometer (km)
a metric unit of length equal to 1000 meters

Global Positioning System (GPS)
A system that determines the precise position of something on Earth through triangulation of satellites, tracking stations, and receivers

Graph
instrument for recording relative position of points or values on a coordinate system, typically showing trends or relationships between variables
