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Either they have less density than air,

or they have some device (like wings) that supplies lift.

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11y ago

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What is the secret of how airplanes are able to stay up in the air?

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How does seaplane fly?

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Things float in the air when the force of buoyancy (upward force exerted by air or a fluid) is greater than the force of gravity (downward force pulling objects toward the earth). This is known as buoyancy and is what allows objects to float or stay suspended in a fluid or gas like air.


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If objects didn't have mass, they wouldn't have any inertia or gravitational attraction. This would mean that they would not be able to interact with each other or respond to forces. Essentially, the entire concept of matter and physics as we know it would be completely different.


Which frisbee's can stay in the air the longest heavy or light?

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What is the effect of air resistance on the acceleration of falling objects?

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