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A ball is projected at an angle of 30^(@...

A ball is projected at an angle of `30^(@)` above with the horizontal from the top of a tower ans strikes the ground in `5sec` at angle of `45^(@)` with the horizontal. Find the hieght of the lower and the speede with which it was projected.

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The correct Answer is:
`[50 (sqrt(3)-1)m//s, 125(2-sqrt(3))m]`
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