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A stone is thrown from the top of a lowe...

A stone is thrown from the top of a lower at an angle of `30^(@)` up with the horizontal with a velocity of `16 m//s`. After `4` sec. of flight it strikes the ground. Let the heighty of lower is `H`.meter. Then the value of `(H)/(12)` is: `(g = 10 m//s)`

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The correct Answer is:
`4`

`-H = 16 sin 30^(@) xx 4 - (1)/(4) (10)4^(2)`
`rArr H = 48` meter.
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