In the above question, suppose that the smaller ball does not stop after collision, but continue...

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In the above question, suppose that the smaller ball does not stop after collision, but continues to move downwards with
\( \mathrm{P} \) a speed \( =v_{0} / 2 \), after the collision. Then, the speed of each

W bigger ball after collision is
(1) \( 4 v_{0} / \sqrt{5} \)
(2) \( 2 v_{0} / \sqrt{5} \)
(3) \( v_{0} / \sqrt{5} \)
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