A line upwards curving to become steeper means that the vehicle is accelerating at an increasing ... change ÷ time. To find the distance travelled, look at the area under the graph.

After that, I will increase the starting distance and repeat it for ... distance should be proportional to time squared. Let's make another graph. First, I am going to put distance on the vertical ...

The steeper the line, the greater the increase in speed. The area under the graph = the distance travelled. This is a speed-time graph for a car moving between two sets of traffic lights.