- #1

kalupahana

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## Homework Statement

A girl swim one bank of a river with 100m when she swims perpendicular to the water current. She reaches the other bank 50m down the stream. The angle at which she should swim ti reach a point directly opposite on the other bank of the river is?

(Velocity of girl=u, velocity of river=v)

## Homework Equations

## The Attempt at a Solution

I have a problem, please tell why the question give the velocities to find the angle.

It can easily taken by applying tan value to the displacements.

then it can be gain as

tanα = 50/100 = 1/2

α = tan

^{-}(1/2)

Please tell me is this right