OBF Practice Questions - OBF - Olimpíada Brasileira De Física Exam

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A projectile is launched from the ground on a flat horizontal plane with initial speed v₀ at an angle α above the horizontal. Air resistance is negligible. If the projectile's maximum height equals its horizontal range (H = R), what is the launch angle α?

α = arctan(2) ≈ 63.4° α = arctan(1) = 45.0° α = arctan(3) ≈ 71.6° α = arctan(4) ≈ 76.0°

Correct Answer:

α = arctan(4) ≈ 76.0°

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