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AP EAMCET201726 Apr 2017Morning ShiftPhysicsMotion in One DimensionActual

A bird is tossing (flying to and fro) between two cars moving towards each other on a straight road. One car has speed of 54 kmh ⁻¹ while the other has the speed of 36 kmh ⁻¹ . The bird starts moving from first car towards the other and is moving with the speed of 36 kmh ⁻¹ where the two cars were separated by 36 ~km . The total distance covered by the bird before the cars meet each other is

Options

  1. A14400 m
  2. B1440 m
  3. C244 m
  4. D24400 m

Correct answer

A. 14400 m

Step-by-step solution

The total time after the two cars which meet = Total distance Relative velocity of car w.r.t each other T= 36 54+36 T= 36 90 =0.4 h In this duration, the distance travel by bird =36 0.4=14.4 ~km =14400 ~m

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