A projectile is launched at an angle of 15° above the horizontal and lands downrange. What other projection angle for the same speed would produce the same downrange distance?
A)30°
B)45°
C)50°
D)75°
E)90°

Question

Quizplus · Accepted Answer

For a given launch speed, the range of a projectile is the same for two angles that add up to 90°. Since the given angle is 15°, the other angle that would produce the same range is 75° (90° - 15° = 75°).

A Projectile Is Launched at an Angle of 15° Above