The value of acceleration due to gravity, which is the acceleration of an object in freefall, is approximately 9.81 m/s² (meters per second squared).

Here's why:

* Gravity: Earth's gravity pulls objects towards its center. This force causes objects to accelerate downwards.

* Freefall: An object is in freefall when the only force acting on it is gravity. This means air resistance is negligible.

Important Notes:

* This value of 9.81 m/s² is an average for Earth. It can vary slightly depending on location (altitude, latitude).

* The acceleration due to gravity is always directed downwards, towards the center of the Earth.

Let me know if you have any other questions!