Answer
-29.7 m/s
Work Step by Step
To find the vertical component of velocity when the bullet strikes the ground we will once again use the fact that it is in the air for 3.03s. We also know that the initial vertical component of velocity is 0 since it was fired horizontally.
Finally, we use
$v = v_{0} + at = 0 + (-9.81m/s^2)(3.03s) = -29.7m/s $
