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How does a balloon hovercraft work does it have lots of forces acting on it and what does friction have to do with it?
It has lift by having hot air, which rises. Gravity, Lift, and Friction act upon the balloon hovercraft. The friction is a fluid friction known as Air Resistance.
Gravity is pulling everything down. The hot air in the balloon is less dense than the surrounding air, so the air forces it up through what is called buoyancy. Any air movement will shove the balloon...