Maths: Algebra 1 - Travel Graphs

Speed, Distance and Time

The following is a basic but important formula which applies when speed is constant (in other words the speed doesn't change):

Remember, when using any formula, the units must all be consistent. For example speed could be measured in m/s, distance in metres and time in seconds.

If speed does change, the average (mean) speed can be calculated:
Average speed = total distance travelled
                             total time taken

Units

In calculations, units must be consistent, so if the units in the question…