Swimmer and River (Relative Velocity)

[ritwik06]

Homework Statement

A swimmer is to reach at a point 30 degree upstream on the other side of a river flowing with velocity 5 m/s. The velocity of the swimmer w.r.t. water is $$5\sqrt{3}$$. The swimmer should steer at an angle??

The Attempt at a Solution

I am unable to guess the scenario. What does this mean?

A swimmer is to reach at a point 30 degree upstream on the other side

 

[tiny-tim]

A swimmer is to reach at a point 30 degree upstream on the other side

Hi ritwik06!

It just means where the line at 30º to straight-across hits the other bank.

(so straight-across would be 0º upstream)