a baseball is thrown horizontally at a velocity of 35 m/s from a height of 1.5 m. How long does it take to hit the ground? how far does it travel?
The fall time is sqrt(2H/g) = 0.553 s
Multiply that by the horizontal velocity component for the distance travelled (horizontally). Of course, it also travels 1.5 meters vertically. They are probably only interested in the horizontal distance.