What is the gravitational acceleration typically used in physics calculations?

The gravitational acceleration commonly used in physics calculations is approximately 9.8 m/s². This value represents the acceleration due to gravity experienced by an object in free fall near the Earth's surface. It is derived from empirical measurements and reflects the average gravitational pull on objects at sea level.

In many physics problems, particularly in introductory courses, this value is further approximated to 10.0 m/s² for easier calculations, especially for quick estimations. However, for more precise and scientific purposes, 9.8 m/s² is preferred, as it accounts for variations in gravitational force due to factors like altitude and local geological structures. Understanding this key value is essential when analyzing motion under the influence of gravity, such as in projectile motion or free fall scenarios.