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Air pressure.
true
Gravity is forcing an object to fall to the ground. Another force is friction from air pressure on the falling object.
Fluid friction acting on an object moving through the air is called air.
No, that is false. "Free fall" means that the only force acting on an object is GRAVITY. Specifically, there may be no significant amount of air resistance. It's not quite possible for the only force acting on an object to be air resistance, since you can't really eliminate the effect of gravity. Though, if the object has the same density than the liquid or gas in which it is placed, the gravity may be cancelled for practical purposes.
Air pressure.
true
true
true
True (:
Yes, it is true.
Gravity is forcing an object to fall to the ground. Another force is friction from air pressure on the falling object.
Fluid friction acting on an object moving through the air is called air.
No, that is false. "Free fall" means that the only force acting on an object is GRAVITY. Specifically, there may be no significant amount of air resistance. It's not quite possible for the only force acting on an object to be air resistance, since you can't really eliminate the effect of gravity. Though, if the object has the same density than the liquid or gas in which it is placed, the gravity may be cancelled for practical purposes.
the air pressure acting on the roof of your house comes from the air within a few feet of your rooftop
It depends on the shape of the object.
Winds occur as air moves from high pressure to low pressure.Wind occurs as air moves from a place of low air pressure to a place of high air pressure is a true statement.