In the simulation above, as the projectile travels downward, how does the vertical velocity change?

The vertical velocity increases.

The vertical velocity increases because of acceleration due to gravity.  The horizontal velocity neither accelerates nor decelerates.

Hope this helps!!

answer; the correct answer is technician a; ///100%good luck

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods