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Answer :
(a) Given, distance covered from point A to point B = 300 meters
Time taken to travel from point A to point B = 2 minutes and 30 seconds = 150 seconds
Displacement from A to B = 300 meters
We know that, Average speed
= \( \frac{distance}{time taken} \)
Therefore, the average speed while travelling from A to B = \( \frac{300}{150} \) = 2 m/s
and, Average velocity = \( \frac{displacement}{time taken} \)
Average velocity while travelling from A to B = \( \frac{300}{150} \) = 2 m/s
(b) Distance covered from point A to point C = 300m + 100m = 400 meters
Time taken to travel from point A to point C = 2 min 30 secs + 1 min = 210 seconds
Displacement from A to C = 300m – 100m = 200 meters
Similarly, Average speed while travelling from A to C = \( \frac{400}{210} \) = 1.9 m/s
Average velocity while travelling from A to C = \( \frac{200}{210} \) = 0.95 m/s