Prime purpose of this lecture is to present on Position vs Time Graphs. Here briefly describe what would a position vs time graph look like of your desk as measured from the chalkboard -for the entire class period. The gradient of a distance-time graph represents the speed of an object. The velocity of an object is its speed in a particular direction. The slope on a velocity-time graph represents the acceleration of an object. The distance traveled is equal to the area under a velocity-time graph.