Catapults can be used in many ways. They were used in ancient history times. There are many types of catapults. When launching a projectile, physics is used in the catapult. Catapults are very helpful to launching things to either destroy something or to launch something over a taller building. Catapults were one of the most effective weapons in early modern times. Catapults were used by Greeks, Romans, and Chinese. In history, the catapults were used to launch missiles directly at a wall or over a wall to conduct major damage. Catapults were used extensively in Europe by the French until 885-886 AD. There are many different types of catapults that launch projectiles. One type is the ballista. The ballista looks very similar to a crossbow.
