A horizontal line means the object is moving at a constant speed. The gradient of the line = the rate of change of speed. The steeper the line, the greater the increase in speed. The area under the ...

This lesson covers spec points 1.7, 1.8 and 1.9 — plotting and explaining velocity–time graphs, determining acceleration from the gradient, and calculating distance from the area under the graph. • ...

But what is the difference? If you ask any person on the street, they might say there is no difference. In non-physics use, they would be correct. However, in physics we have very specific definitions ...