Speed is a measure of how fast something will move in a certain amount of time. The formula for speed is

speed(m/s)= distance travelled(m) / time taken(s)

On a distance time graph- time is on the horizontal axis and distance is on the vertical axis.

A diagonal line going up represents steady speed. A horizontal line represents stationary. A diagonal line going going down represents a steady speed returning to the start.

The steeper the line on a distance-time graph, the greater the speed it represents.

**1. Always show the stages in your working when you do calculations. Always include a unit with your answer is one is not given.**

**2. Make sure that you always label the axes on a graph with a quantity and a unit.**

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