Learn the uses of equations and graphs of motion and how to determine other aspects of the motion of objects. BBC Bitesize Scotland Higher Physics revision.

Velocity-time graphs show how the velocity (or speed) of a moving object changes with time. These graphs also show if the object is moving at a constant speed or accelerating, decelerating, or ...

Of course, the velocity graph should be continuous - that would make the middle velocity constant (zero slope) and non-zero (so that it matches up with the previous interval).

Why do you always make a graph in ... and v 0 is the velocity at time zero. So, for this ... if you use other methods to collect position-time data then there could be a non-zero starting velocity.