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If 2 balls are projected at angles `45^(@)` and `60^(@)` and the maximum heights reached are same, what is the ratio of their initial velocities ?A. `sqrt(2) : sqrt(3)`B. `sqrt(3):sqrt(2)`C. `3:2`D. `2:3` |
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Answer» Correct Answer - B `(u_(1)^(2) sin^(2) 45^(@))/(2g) = (u_(2)^(2) sin 60^(@))/(2g)` `:. (u_(1))/(u_(2)) = (sin 60^(@))/(sin 45^(@)) = (sqrt(3)//2)/((1//sqrt(2))) = sqrt(3): sqrt(2)` |
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