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AP EAMCET202021 Sep 2020Morning ShiftPhysicsMotion in One DimensionActual

A train of (150 ~m ) length is going towards north direction at a speed of (10 ~ms ⁻¹ ). A parrot flies at the speed of (5 ~ms ⁻¹ ) towards south direction parallel to the railway track. The time for which the parrot flies alongside the train is

Options

  1. A(12 ~s )
  2. B(30 ~s )
  3. C(10 ~s )
  4. D(5 ~s )

Correct answer

C. (10 ~s )

Step-by-step solution

According to question, Relative velocity of parrot with respect to the train, ( aligned v_ p t & =v_t-v_p & =10-(-5) & =10+5=15 ~m / s aligned ) ( ) Time taken by the parrot to fly along side the train is given as (t= length of train v_ p t = 150 15 =10 ~s )

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