#physics of propulsion

• Thrower — A noun or adjective designating a person specialized in or a technical device designed for launching, propelling, or throwing an object, a projectile, or a substance into space. In sports, it indicates an athlete competing in throwing events (javelin, discus, hammer, shot put) or the player who throws the ball back into play, while in military or industrial terminology, it refers to mechanical installations or weapons intended for projecting loads at a distance.