Gravitational acceleration is the acceleration experienced by an object due to the gravitational force exerted by a massive body, such as a planet or a star. It is commonly denoted by the symbol \( g \). On the surface of the Earth, the average value of gravitational acceleration is approximately \( 9.81 \, \text{m/s}^2 \).
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Gravitational acceleration is the acceleration of a freely falling test body in a gravitational field. Near Earth's surface its magnitude is approximately constant on shallow vertical scales, and is conventionally denoted by .