What Is Free Fall Acceleration?
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Free fall is any motion of a body where gravity is the only force acting upon it. In the context of general relativity, where gravitation is reduced to a space-time curvature, a body in free fall has no force acting on it.
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On earth free fall acceleration is 9.81 meters per second per second or 32.2 feet per second per second, not including air resistance.
Around these parts, free fall acceleration is the acceleration due to earth gravity on a body that is not acted on by an outside force (like air resistance or a bungee tether).
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