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Air friction (G (Air resistance: is a force acting opposite to the…
Air friction (
G, (
https://youtu.be/akWo3QpiL2I?t=4,
Video),
cold air 
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Hot air Rises wich makes it lighter then cold air ,
Fluid [Friction]) ,
Surface friction ,
Fluid Friction is a friction that acts opposite the direction you are traveling.,
Friction Arising the movement of an object through a medium or (less commonly) over a surface.,
Cold air lowers And is heavier then hot air ,
Kieran and O'Shea ,
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Mass is a property of a physical body. It is the measure of an object's resistance to acceleration ,
Air Friction. Air friction, or air drag, is an example of fluid friction. Unlike the standard model of surface friction, such friction forces are velocity dependent. The velocity dependence may be very complicated, and only special cases can be treated analytically.,
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