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Question

A ball is dropped from the top of the tower of height h. It covers a distance of h2 in the last second of its motion. How long does the ball remain in air? [Take g = 10 m/s2]

एक गेंद को h ऊँचाई की मीनार के शीर्ष से गिराया जाता है। यह अपनी गति के अंतिम सेकण्ड में h2 दूरी तय करती है। गेंद कितने समय के लिए वायु में रहती है? [g = 10 m/s2 लीजिए]

A
2 s
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B
2s
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C
(22)s
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D
(2+2)s
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Solution

The correct option is D (2+2)s

Solution

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