Final answer:
Free fall in physics is defined as the motion of an object when only gravity is acting on it, leading to a constant acceleration of approximately 9.8 m/s² near Earth's surface.
Explanation:
Free fall in physics occurs when the only force acting on an object is gravity, neglecting other small forces. Objects experience an acceleration of approximately 9.8 m/s² during free fall near Earth's surface due to gravity.
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