Acoin falls from rest from the balcony of a building. if it takes 2.7 s for it to hit the ground, what is the final velocity of the coin?

On Earth, gravity adds 9.8 m/s to the speed of a falling object every second.

If the coin and the balcony are both on Earth, and if the falling coin
is not influenced by air resistance, then after 2.7 seconds, its speed
has increased by

(2.7 x 9.8 m/s) = 26.46 m/s .

Its final velocity is 26.46 m/s downward.