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KVPY2012PhysicsMotion in One Dimension

A boat crossing a river moves with a velocity v relative to still water. The river is flowing with a velocity v / 2 with respect to the bank. The angle with respect to the flow direction with which the boat should move to minimize the drift is-

Options

  1. A30^
  2. B60^
  3. C150^
  4. D120^

Correct answer

D. 120^

Step-by-step solution

To minimize the drifting array l = v _ w v _ bw = 1 2 =30^ 90^ + =120^ array

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