Free fall acceleration on Earth is approximately 9.81 meters per second squared (m/s²). This is often rounded to 9.8 m/s² or 10 m/s² for simplicity.

It's important to note that:

* This value is an average and can vary slightly depending on factors like altitude and latitude.

* It represents the rate at which an object accelerates downwards due to gravity in the absence of air resistance.

Let me know if you'd like to learn more about free fall or gravity!