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The time is drawn on the x axis. The magnitude of velocity is drawn on the y axis. We assume that the speed is in the same direction.

Then at each point of time t = 0 sec, 1 sec, 2 sec, etc. we find out the speed. A point is marked with the ordinate height = speed.

If the time range is a large one, choose the scale on the axis on the graph, such that the width of the graph paper is sufficient for the range of time duration. so scale = T seconds/ centimeter.

if the speed range is large or too small, select the scale such that the range is with in the height of graph paper. so scale = V m/sec / centimeter.

If the velocity is always positive, then, draw graph only in the first quadrant. If it is also negative, then draw the 1st and 4th quadrants only.

Then at each point of time t = 0 sec, 1 sec, 2 sec, etc. we find out the speed. A point is marked with the ordinate height = speed.

If the time range is a large one, choose the scale on the axis on the graph, such that the width of the graph paper is sufficient for the range of time duration. so scale = T seconds/ centimeter.

if the speed range is large or too small, select the scale such that the range is with in the height of graph paper. so scale = V m/sec / centimeter.

If the velocity is always positive, then, draw graph only in the first quadrant. If it is also negative, then draw the 1st and 4th quadrants only.