Question

Usha swims in a 90m long pool. she swims with a speed of 6 m/s from first end to second end. and returns back from second to first end with a speed of 3 m/s. find the average speed of swimming.
2 points
4.5m/s
4m/s
3m/s
0m/s​

Answer 1

Answer:

4.5 m/s

Explanation:

time avg=v1+v2/2

Answer 2

Answer:

4.5 m/s

hope it helps

Explanation:

v1 + v2/2