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 and strikes the ground in 5s at an angle of `45^(@)` with the horizontal. Find the height of the tower and the speed with which it was projected.

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The correct Answer is:

`u=50(sqrt3+1)m//s, II=125 (2-sqrt3)m`

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