The time that this journey will take is worked out by using the formula 'time = distance ÷ speed', 15 ÷ 10 = 1۰5. This is 1 hour and 30 minutes. The time is now 09:00 and the distance is 0 ...

Example: Using the gradient or slope of a distance - time graph to work out the speed of an object Calculate the speed of the object represented by the green line in the graph below, from 0 to 3 s ...