[tex]\color{aquamarine}[tex]\Large\mathtt\color{red}{A}\color{orange}{N}\color{yellow}{S}\color{lime}{W}\color{green}{E}\color{cyan}{R}\color{aquamarine}{:}[tex][/tex]
A balloon provides a simple example of how a rocket engine works. The air trapped inside the balloon pushes out the open end, causing the balloon to move forward. The force of the air escaping is the "action"; the movement of the balloon forward is the "reaction" predicted by Newton's Third Law of Motion.
