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NEST2012PhysicsMotion in One Dimension

A hot-air balloon is rising vertically with a constant velocity of 10 ~m / sec . An object is dropped from the balloon when it is 60 m above the ground. The angle of elevation of the Sun is 45^ . When the falling object is 33.75 m from the ground, the rate at which the shadow of the object is traveling along the ground is (take g=10 ~m / sec ^2 )

Options

  1. A15 ~m / sec .
  2. B20 ~m / sec .
  3. C25 ~m / sec .
  4. D30 ~m / sec .

Correct answer

C. 25 ~m / sec .

Step-by-step solution

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