I made a machine that "throws" an Item into the world. It spawns but it goes flying off towards west even though I set the velocity to 0,0,0. I can't figure out why is does this.

 

heres the code that spawns the item:

EntityItem item = new EntityItem(world,x,y,z,drop);
item.setVelocity(0,0,0);
item.velocityChanged=true;
world.spawnEntityInWorld(item);

The block has no collision box. Does it matter?

I made it spawn a half block above the normal one and now it works properly.