1.

An object is projected horizontally from a top of the tower of height `h`.The line joining the point of projection and point of striking on the ground makes an angle `45^(@)` with ground,Then with what velocity the object strikes the groundA. `sqrt((1lgh)/2)`B. `sqrt((9lgh)/2)`C. `sqrt((7lgh)/2)`D. `sqrt((5lgh)/2)`

Answer» Correct Answer - D
`Tantheta=h/R,R=usqrt((2h)/g),V=sqrt(u^(2)+2gh)`


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