Question

plz ans thus question ​

Answer 1

Answer:

option c

Explanation:

the swimmer takes time to cover the same distance but directions are different. time is taking in first position is t1 and second position is taken as t2.distance covering both is 'w'

But here distance is 2w

Here time is taken as t3.

w=t1+t2

same distance so time covering is different .because first is to and fro motion.

second is up and down.

Here when the swimmer swims towards flowing water it takes time greater than first motion.

here distance is 2w is doubled.

2w =w

So

t3=t1+t2