Draw a distance-time graph from the following data (Table 1) showing the distance covered by a racing car in fixed intervals of time. Calculate the speed of the car.
Time
(s)
Distance (in m)
From start point
0
0
1
15
2
30
3
45
4
60
5
75
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Solution
Distance–time graph:
To find the speed from the graph, we take any point A on the straight line graph, then Speed = Distance travelled/Time taken = OB/OC = AC/OC = 30/2 = 15 m/s