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www.GOALias.blogspot.comwe show the time along the x-axisand the distance along the y-axis.• Choose a scale to represent thedistance and another to representthe time on the graph. For the motionof the car scales could beTime: 1 min = 1 cmDistance: 1 km = 1 cm• Mark values for the time and thedistance on the respective axesaccording to the scale you havechosen. For the motion of the carmark the time 1 min, 2 min, … onthe x-axis from the origin O.Similarly, mark the distance 1 km,2 km … on the y-axis (Fig. 13.12).• Now you have to mark the points onthe graph paper to represent eachset of values for distance and time.Observation recorded at S. No. 1in Table 13.6 shows that at time0 min the distance moved is alsozero. The point corresponding to thisset of values on the graph willtherefore be the origin itself. After 1minute, the car has moved a distanceof 1 km. To mark this set of valueslook for the point that represents1 minute on the x-axis. Draw a lineparallel to the y-axis at this point.Then draw a line parallel to thex-axis from the point correspondingto distance 1 km on the y-axis. Thepoint where these two linesintersect represents this set of valueson the graph (Fig. 13.12). Similarly,mark on the graph paper thepoints corresponding to differentsets of values.OOYYFig. 13.12 Making a graphFig. 13.13 Making a graph• Fig. 13.13 shows the set of points onthe graph corresponding to positionsof the car at various times.• Join all the points on the graph asshown in Fig. 13.13. It is a straightline. This is the distance-time graphfor the motion of the car.• If the distance-time graph is astraight line, it indicates that theobject is moving with a constantspeed. However, if the speed of theobject keeps changing, the graph canbe of any shape.XX153MOTIONAND TIME153