IPA: /bəˈlɪstɪkli/
KK: /bəlˈɪstɪkli/
In a way that relates to the motion of projectiles or the science of ballistics.
The missile was designed to travel ballistically, ensuring it reached its target accurately.
Ballistically → It is formed from "ballistic" (from Greek "ballein", meaning to throw) and the suffix "-ally" (meaning in a manner relating to). The word "ballistically" refers to something done in a manner relating to the motion of projectiles or thrown objects.
Think of the word 'ballistic' which relates to 'throwing' ('ballein') and remember that 'ballistically' means in a manner related to that throwing motion.