A catapult is a ballistic device used to launch a projectile a great distance without the aid of explosive devices particularly various types of ancient and medieval siege engines.
In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Kinetic energy is when it is release.Kinetic energy was in our catapult by release the rubber bands.
In physics, potential energy is the energy that an object has due to its position in a force field or that a system has due to the configuration of its parts.Potential energy is when the catapult is loaded.Potential energy was in our catapult by grab the rubber bands and pull it back.
history of catapults
The history of the catapults are when Romes and others use to take down places.