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Manipal MET2013PhysicsMotion in One Dimension

A train of 150 m length is going towards north direction at a speed of 10 ~m / s . A parrot flies at a speed of 5 ~m / s towards south direction parallel to the railway track, the time taken by the parrot to cross the train is equal to

Options

  1. A12 s
  2. B8 s
  3. C15 s
  4. D10 s

Correct answer

D. 10 s

Step-by-step solution

Relative velocity of the parrot w.r.t. the train [10-(-5)]=(10-(-5)) m / s =15 ~m / s Time taken by the parrot to cross the train = 150 15 =10 ~s

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