A person swims 90 m in first 30 seconds, 75 m in next 35 seconds and 55 m in next 25 seconds. Find the average speed.
2.44 m/s²
3.44 m/s²
2.89 m/s²
300 m/s²
2.44 m/s²
3.44 m/s²
2.89 m/s²
300 m/s²
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Explanation:
We know :-
Average velocity=total time/total time
Total distance=30+75+55
Total distance=220 metres
Total time=30+35+25
Total time=90 second
Average velocity=160/90
Average velocity=2.44 m/s²
So opt-A 2.44 m/s² is the correct answer