Question

A helicopter is flying in a straight line over a level field at a constant speed of 9.4 m/s and at a constant altitude of 17 m. A package is ejected horizontally from the helicopter with an initial speed of 17.6 m/s relative to the helicopter, and a direction opposite to the helicopter's motion. Find the initial speed of the package relative to the ground.

Answer 1

I would put it this way:
As the topic in case is projectile, when a body is initially projected to the ground at an initial horizontal speed, the vertical speed at t=0s is 0m/s.
Hence, the initial vertical speed is 0m/s.