These graphs also show if the object is moving at a constant speed or accelerating, decelerating, or still. Acceleration ... over the whole journey is the total distance divided by the total time ...

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.

If the car has a constant acceleration ... the velocity-time graph. OK, so what if the velocity is changing? What about the case of a constant acceleration? We can still find the displacement ...

They are afraid to embrace the power of the graph ... then detects motion over these lines to give position-time data. Again using the quadratic fit I can find the acceleration.