Speed-time graphs show how the speed of a moving object changes with time. Key facts. Gradient of speed-time graph = rate of change of speed (m/s 2). Area under speed-time graph = distance ...

If you look back at our model, you can see that we are plotting distance (x) versus time squared (t 2) and these two should be proportional with the constant of (1/2)a. So, the slope of our ...