A river has a width of 100 m and flows at a uniform speed of 3 m/s from south to north.
A swimmer wants to cross the river from the west shore to the east shore. He is able to swim at a speed of 1.5 m/s.
(a) Where does the swimmer reach the other shore if he always swims perpendicular to the velocity of the water?
(b) If the swimmer would instead swim with an angle of (sixty-eight degrees) with respect to the velocity of the water, where would he reach the shore?