Key ideas1 of 3
Read velocity at a time
A velocity–time graph shows velocity vertically and time horizontally. A horizontal line means constant velocity; a line on zero velocity means the object is stationary. A rising straight line shows constant positive acceleration. In this example, velocity rises from 0 to 8 m/s during the first 4 s, stays at 8 m/s from 4 s to 8 s, then returns to zero at 12 s. All shown velocities are zero or positive.
