JEE Main Physics question

A particle is projected vertically upwards in vacuum with a speed .

(A)The time taken to rise to half its maximum height is half the time taken to reach its maximum height
(B)The time taken to rise to three-fourth of its maximum height is half the time taken to reach its maximum heightCorrect
(C)When it rises to half its maximum height, its speed becomes Correct
(D)When it rises to half its maximum height, its speed becomes

Answer: (B),(C)

Solution

With and , height , and (at ). For : solving gives , **not** — (A)

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Question ID VK-152151