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Concepts Of Physics MCQ Edition [Volume 1]PhysicsRest and Motion Kinematics

A stone is released from an elevator travelling upward with an acceleration a . Following its release, the acceleration of the stone is

Options

  1. A(g - a) downward
  2. B(g - a) upward
  3. Ca upward
  4. Dg downward

Correct answer

D. g downward

Step-by-step solution

When the stone is released from the elevator, it loses contact with it and is in a state of free fall. The only force acting on the stone is the gravitational force of the earth, which acts vertically downward. Therefore, the acceleration of the stone is the acceleration due to gravity, g downward. The acceleration of the elevator only affects the initial velocity of the stone at the moment of release, not its acceleration after release.

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