Canadian Firearms Safety Course (CFSC) Practice Exam

The trajectory of a projectile generally crosses the line of sight to the target twice during its flight. This can be understood by considering the path of the projectile, which is typically a parabolic arc due to the influence of gravity.

Initially, as the projectile moves upwards, it rises and crosses the line of sight for the first time. After reaching the apex of its flight, the projectile then descends, crossing the line of sight again on its way down toward the target. This results in two intersections with the line of sight: once on the ascent and once on the descent.

Understanding this concept is key for shooters when considering factors such as range, bullet drop, and aiming techniques. Knowing that a projectile will cross the line of sight twice can assist in making more accurate shots at varying distances, particularly when calculating for bullet trajectory and adjusting for elevation.