Answer to Question #161366 in Molecular Physics | Thermodynamics for Samir khan

Question

You are standing on the North bank of a river which has a current moving 0.2 m/s [E], if you can swim 1.0 m/s, in what direction (to the nearest degree) should you swim in order to reach the South bank of the river at the point exactly opposite from you?

Answer 1

$\alpha =arcsin \frac {0.2}{1}\approx 11.5°~S~to~E.$