Internal ballistics, the study of the processes originally accelerating the projectile, for example the passage of a bullet through the barrel of a rifle

External ballistics, the study of the passage of the projectile through space or the air

Terminal ballistics, the study of the interaction of a projectile with its target, whether that be flesh (for a hunting bullet), steel (for an anti-tank round), or even furnace slag (for an industrial slag disruptor)

Ballistics (video game), a 2001 video game by GRIN

Ballistics, the science that deals with the motion, behavior, and effects of projectiles. Specifically:

Forensic ballistics, the science of analyzing firearm usage in crimes

Ballistic missile, a missile that follows a sub-orbital flightpath

Transition ballistics, the study of the projectile's behavior when it leaves the barrel and the pressure behind the projectile is equalized

Ballistic: Ecks vs. Sever, a 2002 film starring Antonio Banderas and Lucy Liu

Ballistic (DC comics), a DC Comic Book Character

Ballistic (comics), a comic character of Top Cow Productions

Ballistic (publisher), a video game publisher