The graph velocity-time (v-t) of a constant acceleration motion, or uniformly accelerated rectilinear motion (u.a.r.m.), represents time on the horizontal axis (t-axis) and velocity on the vertical axis (x-axis).
Fig. 8 shows the graphs of displacement versus time and velocity versus time for a body moving with constant acceleration. It can be seen that the displacement-time graph consists of a curved-line whose gradient (slope) is increasing in time.
Learn how to interpret the motion of an object represented on a velocity vs. time graph.