Question : A ball is thrown vertically upwards from the top of a tower of height β with velocity π£. The ball strikes the ground after
(A) \dfrac{v}{g}\left[ 1+\sqrt{1+\dfrac{2gh}{r^{2}}}\right]
(B) \dfrac{v}{g}\left[ 1-\sqrt{1+\dfrac{2gh}{r^{2}}}\right]
(C) \dfrac{v}{g}\left( 1+\dfrac{2gh}{v^{2}}\right) ^{\dfrac{1}{2}}
(D) \dfrac{v}{g}\left( 1-\dfrac{2gh}{v^{2}}\right) ^{\dfrac{1}{2}}
Answer : option (A)
Solution :
