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JEE Main Physics question

PhysicsMotion in a Straight LineJEE Main

A balloon rises from rest on the ground with constant acceleration 1 ms. A stone is dropped when the balloon has risen to a height of 39.2 m. Find the time taken by the stone to reach the ground. (Take ms.)

Answer: $\approx3.87$ s

Solution

Balloon's speed at release: ms (upward). Taking downward as positive, the stone then falls from height 39.2 m with this initial upward

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Question ID VK-152184