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A projectile is aimed at a mark on a horizontal plane through the point of projection and falls 6m short when elevation angle is 30°. The projectile overshoot the mark by 9m when angle of projection is 45°. The correct distance of the mark is ? A projectile is aimed at a mark on a horizontal plane through the point of projection and falls 6m short when elevation angle is 30°. The projectile overshoot the mark by 9m when angle of projection is 45°. The correct distance of the mark is ?
Let the velocity of projection be u. Distance of mark from point of projection is x.When angle of projection is 30০ :Horizontal range = x - 6 ....... (1)When the angle of projection is 45০ :Horizontal range = x + 9 ......... (2)(1)÷(2)
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