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Two balls are thrown vertically upward such that they remain in air at any time. Find the minimum velocity of throw required.

1. 19.6 m/s
2. 9.8 m/s
3. 4.9 m/s
4. 2.45 m/s

Correct answer: 9.8 m/s

Solution

The minimum velocity required for an object to remain in the air for a certain time is determined by the equation v = gT/2, where T is the total time in the air. For the given problem, the minimum velocity is 9.8 m/s.

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