Solved Snowball control

Hey Bukkit,

I want to control a snowball in the way it goes straight forward until it hits a block with X amount of speed.
What I want is spawn a snowball at cord
- 0,1,0 and traight to
- 10,1,0 at speed 1

Sorry for bad explaining but I hope you get me, I basicly want to spawn a snowball and shoot it straight controlled at a speed of X

EDIT: It floats until a blockhit

Just found out I can do it with Holos

EDIT by Moderator: merged posts, please use the edit button instead of double posting.