How far an object has travelled

• speed

• distance

• time

• metres

How long it takes for something to happen

• speed

• distance

• time

• metres

How fast an object is travelling

• speed

• distance

• time

• metres

Symbol for distance

• d

• D

• s

• t

Symbol for time

• d

• v

• t

• T

Symbol for speed

• d

• v

• t

• m

SI unit for measuring distance

• m

• s

• m/s

• d

SI unit for measuring time

• m

• s

• m/s

• v

SI unit for measuring speed

• v

• m

• s

• m/s

Speed that does not change over time

• acceleration

• deceleration

• constant

• variable