Distance = Speed x Time

Time = Distance / Speed

Speed = Distance / Time

## Distance-time graph

Speed = gradient

**Remember Formula Using Units E.g.**

Units of speed = km/h

Units of gradient = km/h

## Speed-time graph

Distance travelled = Area under graph

Acceleration = gradient

**Remember Formula using Units: **E.g.

Units of distance = m

Units of area under graph = (m/s)s=m

Units of acceleration =

Units of gradient = (m/s)/s=

**Useful Formula:**

Area of trapezium = 1/2 x height x (sum of parallel sides)

The formula rhymes! š