We have a graph, but what do we do with it ... Since the slope of the linear fit is 0.0541 m/s 2 (yes, the slope has units), then the acceleration of this cart would be 0.108 m/s 2.

Save guides, add subjects and pick up where you left off with your BBC account. The gradient of a velocity-time graph at a particular time gives the acceleration of the object at that time.

The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time. In this example, distance is in metres (m ...