Concept of motion and it's graphical representation has always been a jargon and a pain to students of class 9th,10th,11th and 12th, be it RBSE or CBSE. Even for cracking IIT and NEET this concept has to be done well. We at Alchemy Learning always insist on getting the concept right. Distance – Time Graph: When an object is moving with uniform velocity, the slope of graph is always a straight line. In other words, slope of straight line of a distance-time graph shows that object is moving with uniform speed. In the above graph, straight slope line shows that object is moving with uniform velocity. Slope OA shows the speed of the object. Calculation of Speed using distance-time graph: To calculate the SPEED, let take two points A and B on the slope OB. Draw a line parallel to y-axis and another parallel to x-axis from B. Again draw a line parallel to y-axis and another parallel to x-axis from point A. Let, line parallel to x-axis from point B cut