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A ball is projected form the ground at a...

A ball is projected form the ground at an angle of `45^(@)` with the horizonatl surface .It reaches a maximum height of 120 m and return to fthe ground .upon hitting the ground for the first time it loses half of its kinetic energy immediately after the bounce the velocity of the ball makes an angle of `30^(@)` with the horizontal surface .The maximum height it reaches after the bounce in metres is _______

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The correct Answer is:
B

Statement II, is the formula of relative velocity. But it does not explain Statement I correctly. The correct explanation of statement I is due to visual perception of motion. The object appears to be moving faster, when its angular velocity is greater w.r.t. observer.
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