Two projectiles are launched with the same speed at 30° and 60°. What is the ratio of their maximum heights, H₃₀ : H₆₀?
Correct answer D. 1 : 3
Explanation
H ∝ sin²θ, so H₃₀/H₆₀ = sin²30°/sin²60° = 0.25/0.75 = 1/3. Their ranges are equal but their heights are not.
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