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Question

Two balls having different masses are dropped from a height of 25 m in a vacuum chamber. Halfway down, the speed of ball A will bethat of ball B.

A
equal to
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B
less than
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C
greater than
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Solution

The correct option is A equal to
In a vacuum chamber, gravity is the only force acting on both the balls. In this case, the acceleration experienced by the balls will be independent of their masses. Therefore, both the balls will fall at the same rate.
Hence, the speed of both the balls will be equal at any point in their journey to the ground.

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