Two projectiles thrown from the same point at angles 60 ° and 30 ° with the horizontal attain the same height. The ratio of their initial velocities is

Question

Two projectiles thrown from the same point at angles 60 ° and 30 ° with the horizontal attain the same height. The ratio of their initial velocities is, 1, 2, 3, 1 3

MARKS App · Accepted Answer

h m a x . = v 2 sin 2 θ 2 g as h m a x . is same in both the cases v 1 2 sin 2 θ 1 2g = v 2 2 sin 2 θ 2 2g But θ 1 = 60 ο , θ 2 = 30 ο v 1 2 3 4 g = v 2 2 1 4 g v 1 v 2 = 1 3

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