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A stone falls freely under gravity. It c...

A stone falls freely under gravity. It covered distances `h_1, h_2` and `h_3` in the first `5` seconds. The next `5` seconds and the next `5` seconds respectively. The relation between `h_1, h_2` and `h_3` is :

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The correct Answer is:
D
At the top most point `v=u cos theta=sqrt(10) cos 60^(@)=sqrt(10)/2`

`:. Mg=(mv^(2))/R, R=((sqrt(10)/2)^(2))/10=10/40 R=1/4 m`
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