1) A swimmer wants to cross a 200 m wide river which is flowing at a speed of 2 m/s . The velocity of the swimmer with respect to the river is 1 m/s. How far from the point directly opposite to the starting point does the swimmer reach the opposite bank? A) 200 m B) 400 m C) 600 m D) 800 m Answer: Option BExplanation: Given, width of river (w)=200 m Velocity of river =2 m/s Velocity of man =1 m/s we know that, $\frac{w}{v_{man}}=\frac{d}{v_{stream}}$ $d= \frac{w \times v_{stream}}{v}$ $d= \frac{200 \times 2}{1}$ $d=400 m$
