Key learning points

1. On a distance-time graph, a horizontal line means no distance was travelled for that time.
2. A slanted line means that the distance from the start is changing over time.
3. The distance travelled divided by the time taken gives the speed.
4. You find this by considering the change in distance with respect to the change in time.
5. This is how you find the gradient of the line, which is also the speed.

Keywords

• Gradient - The gradient is a measure of how steep a line is. It is calculated by finding the rate of change in the $$y$$-direction with respect to the positive $$x$$-direction.

• Displacement - Displacement is the distance from the starting point when measured in a straight line.

Common misconception