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A ball is thrown up vertically with a certain velocity so that, it reaches a maximum height h. Find the ratio of the times in which it is at height 3 h while going up and coming down respectively.

1. 1 2 1 – 2 +
2. 2 3 2 – 3 +
3. 1 3 1 – 3 +
4. 3 1

Correct answer: 2 3 2 – 3 +

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