Pete slid a domino off a bridge and it took 2.3 seconds to hit the gully below how many feet did the domino fall

To solve this, we are going to use the distance of a free fallen object: 
where
is the distance
is the gravity of the Earth 
is the time in seconds 

We know from our problem that Pete slid a domino off a bridge and it took 2.3 seconds to hit the Gully below, so . Lets replace that value in our formula to find :


feet

How can conclude that the domino fell a distance of 85.1 feet.

Ibelieve its 0 but i am not sure

Idon’t understand sorry