What is the role of air resistance in ballistics?

In ballistics, air resistance plays a significant role in affecting the motion of a projectile, such as a bullet. The correct choice highlights that air resistance slows down the projectile. When a bullet is fired, it travels through the atmosphere where it encounters air molecules. This interaction creates drag, which opposes the bullet's forward motion.

As the bullet moves, the air resistance increases with speed, resulting in a reduction of its velocity over time. This deceleration can influence several aspects, such as the distance the bullet can travel before coming to a stop, as well as the time it takes to reach its target. Additionally, the effects of air resistance must be accounted for when considering long-range shooting, as it can affect both accuracy and the required adjustments for aiming.

While other factors in ballistics, such as gravity, also affect the trajectory of a bullet, the specific impact of air resistance is critical in understanding how projectiles behave in the atmosphere. This understanding is essential for accurate shooting and for making necessary adjustments to ensure successful hits on target.