There is a lot of information contained in a graph, in the graph below an object moves at a constant velocity for 5 seconds then stops and waits for 15 seconds. The object then returns back to the starting point. What else is the graph that isn't so apparent. The velocity of the object at any time is the slope of the graph at that point. The slope for the first 5 seconds is 2 m/s (rise over run, the rise is 10 meter the run is 5 seconds 10 m /5 s = 2 m/s) . For the time between 5 and 15 seconds, the velocity is 0 m/s (rise over run, the rise is 0 meter and the run is 10 seconds 0 m /10 s = 0 m/s). For the last ten seconds the rise is -10 meters and the run is 10 seconds 10 m / 10 s = 1 m/s.