Key fact The gradient of speed-time and velocity-time graphs represent acceleration. The area under a speed-time graph represents the distance travelled.

The gradient of a velocity time graph represents acceleration, which is the rate of change of velocity. If the velocity-time graph is curved, the acceleration can be found by calculating the ...

A graph of Jupiter’s apparent velocity against time would therefore slope down so that the area under the curve forms a trapezoid – a four-sided shape with a sloping top.