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I don't quite understand why you mix "gravitation" and "weightless" in the question. The gravitational acceleration of Earth is 9.8 m/sec2 near the surface; further away, it will gradually decrease. The presence of air - if that is what you referring to - is quite irrelevant to the fact that there is gravitation.

Q: What is the gravitational acceleration of earth in a weightless environment?

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At or near the surface of the earth, the acceleration due to gravity is 32 feet per second per second

You divide the mass by the weight, to get the gravitational acceleration. Then you use the fact that this gravitational acceleration, or gravitational field, is inversely proportional to the square of the distance. The distance should be calculated from the center of the Earth.

Yes. Gravity exists everywhere in the universe as all objects have a gravitational pull. Objects in space do not seem weightless because there is no gravity. Rather they seem weightless because they are in freefall.

That is because Earth attracts objects with a certain force (through gravitation). If the gravitational force were more, the acceleration would be more. If the gravitational force were less, the acceleration would also be less.

Gravity doesn't have speed , it has acceleration. On Earth gravitational acceleration is 9.8 ms^-2. Often approximated to 10 ms^-2

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A body in orbit is in free fall, so no weight would be experienced by it. It moves under gravity, but the gravitational force is exactly matched by its acceleration.

This can be measured by the acceleration due to gravity at the surface. Earth's surface gravitational acceleration is about 9.8 m/s2

The earth creates a gravitational acceleration field around the earth and objects in that field experience the same acceleration field.

Earth's gravitational acceleration is approximately 9.8 m/s^2, or 1g.

acceleration

Gravitational forces are much reduced by distance. Also, they would be fairly well balanced in all directions. However, there would probably still be some detectable gravitational force. The other definition of "weightless" is when an object is still in a gravitational field, but in "free fall". That's why astronauts orbiting Earth are "weightless".

While his ship is accelerating away from the Earth he will feel heavier as acceleration acts a lot like gravity. Upon decelerating he will begin to feel lighter, a lot lighter, until he is almost weightless.

At the Earth's surface, the acceleration due to gravity is 9.8 m/s2.

The mass of the object the force is acting on, and the gravitational acceleration where the force is acting. F = m*g, where F is the gravitational force, m is the mass of the object and g is the gravitational acceleration (on Earth it is about 9.81ms-2)

At or near the surface of the earth, the acceleration due to gravity is 32 feet per second per second

On Earth, that is about 980.

You divide the mass by the weight, to get the gravitational acceleration. Then you use the fact that this gravitational acceleration, or gravitational field, is inversely proportional to the square of the distance. The distance should be calculated from the center of the Earth.