"The tradition goes that you and your honey buy a padlock, engrave your names or initials on it, lock it to a bridge, and then throw the key in the river below, thus solidifying your love forever" (source)

Daisy throws her love-lock's key horizontally with a speed of 12.5 m/s from a bridge. It falls 2.90 s before reaching the water below. What was the total speed just before hitting the water?