The acceleration of a falling body is approximately 9.8 m/s² (meters per second squared). This is known as the acceleration due to gravity and is often represented by the letter g.

Here's what it means:

* Every second, the speed of a falling object increases by 9.8 meters per second.

* This acceleration is constant, meaning it remains the same regardless of the object's mass or initial velocity.

Important Notes:

* Air resistance: This value is an approximation and doesn't consider air resistance. In reality, air resistance slows down falling objects, especially lighter ones.

* Location: The value of 'g' varies slightly depending on your location on Earth.

* Free fall: This refers to an object falling only under the influence of gravity, with no other forces acting upon it.

Let me know if you'd like to explore any of these aspects in more detail!