A stone projected at an angle of 60° from the ground level strikes at an angle of 30° on the roof of a
building of height h. Then the speed of projection of the stone is
80°
1) √2gh
2) √6gh
3) √3gh
4)√gh
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A stone projected at an angle of 60∘ from the ground level strikes a building of height h at an angle of 30∘. Then the speed of projection of the stone is :.
Explanation:
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