Question

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

Answer 1

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