Distance time graphs tell you how far something has travelled
The gradient (slope) at any point gives you he speed of the object
Flat sections are where it’s stopped
A steeper graph means it’s going faster
Curved represent acceleration
A curve getting stealer means it’s speeding up
A levelling off curve means it’s slowing down
Speed = gradient = verticle/horizontal
You can also calculate the average speed of an object over a period of time by dividing the total distance travelled by the time it takes to travel that distance