For a projectile launched at an angle to achieve the maximum horizontal range, the angle of projection should be 45°. This is derived from the kinematic equations of projectile motion, where the horizontal range is maximum when the angle is 45° (assuming no air resistance).
- 30° will give a smaller range than 45°.
- 45° is the optimal angle for maximum range.
- 60° will result in a shorter range compared to 45° because the horizontal component of the velocity decreases.
- 90° is a vertical launch, and the range would be zero as the projectile would fall straight back down.
Thus, the angle of projection for the maximum horizontal range should be 45°.