A helicopter is flying horizontally at 8.4 m/s and an altitude of 17 m when a package of emergency medical sup?

A helicopter is flying horizontally at 8.4 m/s and an altitude of 17 m when a package of emergency medical supplies is ejected horizontally backward with a speed of 10 m/s relative to the helicopter. Ignoring air resistance, what is the horizontal distance between the package and the helicopter when the package hits the ground?