distance–time graph

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Graph used to describe the motion of a body by illustrating the relationship between the distance that it travels and the time taken. Plotting distance (on the vertical axis) against time (on the horizontal axis) produces a graph, the gradient of which at any point is the body's speed at that point (called the instantaneous speed). If the gradient is constant (the graph is a straight line), the body has uniform or constant speed; if the gradient varies (the graph is curved), then so does the speed, and the body may be said to be accelerating or decelerating. The shape of the graph allows the distance travelled, the speed at any point, and the average speed to be worked out.

Nordic flags bearing the Scandinavian cross are based on the Danish flag, known as the Dannebrog, ‘Danish cloth’. Effective date: 1 May 1893. >>