What's wrong with this script?

The ball is created, and it stays in front of me. It doesn't move forward like it should. It decides to stop working after about 2 shots. Sometimes one.

Player = game.Players.LocalPlayer
Char = Player.Character
Torso = Char.Torso
Mouse = Player:GetMouse()
Attack = false
function onKeyDown(key)
	key = key:lower()
	if key == "f" and Attack ==  false then
		Attack = true
		local Ball = Instance.new("Part")
		Ball.Parent = workspace
		Ball.Shape = "Ball"
		Ball.Size = Vector3.new(5,5,5)
		Ball.BrickColor = BrickColor.new("Really red")
		Ball.Transparency = 0.4
		Ball.TopSurface = 0
		Ball.BottomSurface = 0
		Ball.CFrame = Torso.CFrame * CFrame.new(0,0.5,-4)
		local Bv = Instance.new("BodyVelocity")
		Bv.Parent = Ball
		Bv.maxForce = Vector3.new(math.huge,math.huge,math.huge)
		Bv.P = 1250 
		Bv.velocity = Torso.CFrame.lookVector * 1000
		game.Debris:AddItem(Ball,4)
		wait(3)
		Attack = false
	end
end
Mouse.KeyDown:connect(onKeyDown)

Since you parented the part to the Workspace before you added the BodyVelocity, it isn't being picked up by the physics engine. Move Ball.Parent = workspace from line 11 to line 24 and it works.