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Choose the correct option (i) The spee...

Choose the correct option
(i) The speed of a projectile at its maximum height is half of its initial speed. The angle of projection is `60^(@)`.
(ii) A missile is fired for maximum range with an initial velocity of `20 m//s`, the range of the missile is `40 m`.
(iii) A ball is projected with a kinetic energy `E` at an angle of `45^(@)` to the horizontal. At the highest point during its flight, its kinetic energy will be `E//2`.
(iv) An object is projected at an angle of `45^(@)` with horizontal. The horizontal range and the maximum height will be in the ratio `4:1`

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