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• Option A

  If the greatest height to which a man can throw a stone is h, then the greatest horizontal distance upto which he can throw the stone is 2h.

• Option B

  The angle of projection for a projectile motion whose range R is n times the maximum height is tan⁻¹(4/n)

• Option C

  The time of flight T and the horizontal range R of a projectile are connected by the equation gT² = 2R tanθ where θ is the angle of projection.

• Option D

  A ball is thrown vertically up. Another ball is thrown at an angle θ with the vertical. Both of them remain in air for the same period of time. Then the ratio of heights attained by the two ball 1 : 1.