v = u + at
where:
* v is the final velocity (the velocity at a specific time)
* u is the initial velocity (the velocity at the start of the fall)
* a is the acceleration due to gravity (approximately 9.8 m/s² on Earth)
* t is the time elapsed since the start of the fall
Important Notes:
* This formula assumes that air resistance is negligible. In reality, air resistance can significantly affect the velocity of a falling object.
* The initial velocity (u) can be zero if the object is dropped from rest.
* The formula only provides the vertical velocity, not the overall velocity if the object has horizontal motion as well.
Example:
If an object is dropped from rest (u = 0 m/s) and falls for 2 seconds (t = 2 s), its final velocity would be:
v = 0 + (9.8 m/s²) * (2 s) = 19.6 m/s
Therefore, the velocity of the object after 2 seconds would be 19.6 m/s.
