Q. A ball hit with a velocity at an angle with the horizontal just clears a wall horizontally. The ratio of height of the wall to its distance from the projection point of the ball is

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A

B

C

D

Solution:

Since the ball just clears the wall horizontally, the wall's height is equal to the maximum elevation of the ball and the wall is situated at a distance equal to half the range of the ball.
given
and .

required ratio

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