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A ball is thrown form a point on a ground at some angle of projection. At the same time a bird starts form a point directly above this point of projection at a height h horizontally with speed `u`. Given that in its flight ball just touches the bird at one point. Find the distance on ground where ball strikesA. `2usqrt((h)/(g))`B. `usqrt((2h)/(g))`C. `2usqrt((2h)/(g))`D. `usqrt((h)/(g))` |
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Answer» Correct Answer - C `v_(x) = u, h = (v_(y)^(2))/(2g), v_(y) = sqrt(2gh)` `R = (2V_(x)V_(y))/(g) rArr R = (2usqrt(2gh))/(g) rArr R = 2u sqrt((2h)/(g))` |
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