Why does an inflated balloon shoot off when its air is released?
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Air particler have large spaces between them, they also have the maximum kinetic energy and lesser force of attraction between the particles. Therefore, when the balloon is inflated the particles of air in it moves very faster and strikes the walls of balloon from inside which exerts pressure on the inner wall of balloon. When the mouth of the balloon is opened the particles in their direction of movement flows out of the balloon, due to opposite force exerted by the particles the balloon moves upward and keep changing its direction.
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