Physics-
General
Easy

Question

A person swims in a river aiming to reach exactly on the opposite point on the bank of a river. His speed of swimming is 0.5m/s at an angle of 120° with the direction of flow of water. The speed of water is ..

  1. 1m/s    
  2. 0.5m/s    
  3. 0.25m/s    
  4. 0.43m/s    

The correct answer is: 0.25m/s


    Here V equals 0.5 m divided by s U equals ?
    s i n invisible function application theta equals fraction numerator u over denominator v end fraction rightwards double arrow fraction numerator u over denominator 0.5 end fraction equals fraction numerator 1 over denominator 2 end fraction text  or  end text u equals 0.25 m divided by s

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