A solid sphere falls with a terminal velocity of \( 20 \mathrm{~ms}^{-1} \) in air. If it is all...

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Terminal Velocity (1995)
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A solid sphere falls with a terminal velocity of \( 20 \mathrm{~ms}^{-1} \) in air. If it is allowed to fall in vacuum,
(1) terminal velocity will be \( 20 \mathrm{~m} \mathrm{~s}^{-1} \)
(2) terminal velocity will be less than \( 20 \mathrm{~m} \mathrm{~s}^{-1} \)
(3) terminal velocity will be greater than \( 20 \mathrm{~m} \mathrm{~s}^{-1} \)
(4) no terminal velocity will be attained
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