Question

38. A man throws balls with the same speed vertically
upwards one after the other at an interval of
2 second. What should be the speed of the throw
so that more than two balls are in the sky at any
time? (Given g = 9.8 m/s2)
(1) More than 19.6 m/s
(2) At least 9.8 m/s
(3) Any speed less than 19.6 m/s
(4) Only with speed 19.6 m/s
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Answer 1

Explanation:

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