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Types of Force
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Inertia
Zero Gravity
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ZERO GRAVITY

Every object in the universe has mass. Mass is determined by the amount of matter in an object and how much space it takes up or occupies. No matter where an object is in the universe, its mass will never change. However its weight will always change with its location in the universe. Every planet or heavenly body has a core that exerts a gravitational pull on any object on or near its surface.

The weight of an object is determined by the amount of gravitational pull on an object. This gravity changes in amounts because of the size or difference in mass of the objects and the distance between objects. The farther away an object is from the earth's or any planet's surface, the less gravitational force or pull the earth or planet has on it. For example, if you had two people of equal weight, one at a mountain top, and one at the foot of that mountain, the person at the top would weigh less because she is farther away from the earth's surface.

The reason you seem to experience weightlessness or zero gravity in space is because there is extremely little gravitational pull being exerted on you by planets or heavenly bodies because you are far enough away from any planet or heavenly body to not be pulled in or attracted to it.

Types of Force | Motion | Inertia | Zero Gravity | Mass | Weight | Biographies | Newton's Laws
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