Question

Upstream-downstream question doubt :
will give medals and fan for help!

Answer 1

Hi, @newtoos , I would hate to say that you are wrong.
S=(v+u)T

S=(v-u)*2T ............. Distance is the same

So, (v+u)T=(v-u)*2T

Giving v=3u

Hope it is clear!
Best wishes!!

Answer 2

But wait, you say the same answer : v=3u , and that's exactly what i say too, d :/

Answer 3

@YanaSidlinskiy

Answer 4

Which is....You are correct!

Answer 5

Lol :D Thanks :)

Answer 6

You're welcome!:) Glad to help!:)