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Speed
The rate at which an object moves; speed
depends on the distance traveled and the
time taken to travel that distance
Distance
The length between two objects
Units for measuring DISTANCE
millimeter (mm), centimeter (cm), meter (m), mile, etc.
Units for measuring TIME
second (s), hour (hr), year, minute (min), etc.
Units for measuring SPEED
centimeters per second (cm/s), meters per second (m/s), kilometers per hour (km/hour), etc.
constant speed

stopped (0 m/s)

changing speed (speed decreases, then increases)

Displacement
Distance and direction of an object's change in position from the starting point.
