The final velocity of a freely falling object depends on several factors:

* Initial velocity (v_i): If the object is dropped from rest, the initial velocity is 0. If it is thrown downwards, the initial velocity will be a positive value, and if thrown upwards, it will be negative.

* Acceleration due to gravity (g): This is approximately 9.8 m/s² on Earth.

* Time (t): The duration of the fall.

The formula to calculate the final velocity (v_f) is:

v_f = v_i + gt

Example:

* If an object is dropped from rest (v_i = 0) and falls for 5 seconds, its final velocity will be:

* v_f = 0 + (9.8 m/s²)(5 s) = 49 m/s

Important Note: This formula assumes no air resistance. In reality, air resistance will slow the object down, and the final velocity will be less than calculated here.