Mass is the property of matter on which gravity act upon.
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Gravity acts upon the mass of matter. The greater the mass of an object, the stronger the gravitational force acting on it.
gravity
Force and gravity are distinct concepts in physics. Gravity is a fundamental force of attraction between objects with mass, while force is a push or pull that can act in various ways. It is not possible for a force to directly become gravity, as they operate differently in nature.
Vacuum itself does not have gravity. In a vacuum, there is an absence of matter and gas particles, so there is no medium for gravity to act upon. Objects in a vacuum are subject to the gravitational pull of nearby massive bodies like planets or stars.
Some forces that can act upon a moving object include friction, air resistance, gravity, and applied forces like pushing or pulling. These forces can affect the speed, direction, and motion of the object.
For gravity to act on every object, two criteria must be met: mass and distance. Every object must have mass, which is a measure of how much matter it contains. Gravity also depends on the distance between objects, with the force decreasing as distance increases.