I don't know how to make the player move the part?

Ok so when a player equips a tool and clicks there parts are made invisible, they get welded to a new part, and they are suppose to fly around with the part. Thing is I don't know if I am missing or doing something wrong, might be something to do with the welding, or I may have to do userinputservice and when they press "w","s",A",d" then to direct a force in that direction. I would appreciate the help!

local tool = script.Parent
local player = game.Players.LocalPlayer
local Mouse = player:GetMouse()
local cam = game.Workspace:WaitForChild("Camera")
local emit = tool:WaitForChild("Emit")

tool.Equipped:connect(function(mouse)
	mouse.Button1Down:connect(function()
		print("Hi")
		local distance = ( player.Character.Torso.Position- Mouse.Hit.p).magnitude
		if distance < 100 then
			if game.Workspace:FindFirstChild("Ball") == nil then
			local part = Instance.new("Part")
			part.Name = "Ball"
			part.Shape = "Ball"
			part.Transparency = 1
			part.CanCollide = false
			part.Parent = game.Workspace
			part.CFrame = player.Character.Torso.CFrame + Vector3.new(0,20,0)
			wait("Good")
			local clone = emit:Clone()
			emit.Parent = game.Players.LocalPlayer.Character.Torso
			print("Better")
			local ball = game.Workspace:WaitForChild("Ball")
			local weld = Instance.new("Weld")
			weld.Parent = script.Parent
				weld.Part0 = game.Workspace:WaitForChild("Ball")
				weld.Part1 = game.Players.LocalPlayer.Character.Torso
				
			game.Players.LocalPlayer.Character.Torso.Transparency = 1
			game.Players.LocalPlayer.Character.Head.Transparency = 1
			game.Players.LocalPlayer.Character.Head.face.Transparency = 1
			game.Players.LocalPlayer.Character["Right Arm"].Transparency = 1
			game.Players.LocalPlayer.Character["Left Arm"].Transparency = 1
			game.Players.LocalPlayer.Character["Right Leg"].Transparency = 1
			game.Players.LocalPlayer.Character["Left Leg"].Transparency = 1
			for i,v in pairs(game.Players.LocalPlayer.Character:GetChildren()) do
				if v:IsA("Hat") then v.Handle.Transparency = 1
					
				end
			end
			
			game.Players.LocalPlayer.Character.Torso.CFrame = part.CFrame
			print("Perfect")
			cam.CameraSubject= game.Workspace:WaitForChild("Ball")
			cam.CameraType = "Follow"
			
			local force = Instance.new("BodyVelocity")
			force.P = 23
			force.MaxForce = Vector3.new(10000,10000,10000)
			force.Velocity = Vector3.new(5,5,5)
			force.Parent = part
	
	
	end
	end
	end)
end)
tool.Unequipped:connect(function()
	game.Workspace:FindFirstChild("Ball"):Remove()
	
	game.Players.LocalPlayer.Character.Torso.Transparency = 0
			game.Players.LocalPlayer.Character.Head.Transparency = 0
			game.Players.LocalPlayer.Character.Head.face.Transparency = 0
			game.Players.LocalPlayer.Character["Right Arm"].Transparency = 0
			game.Players.LocalPlayer.Character["Left Arm"].Transparency = 0
			game.Players.LocalPlayer.Character["Right Leg"].Transparency = 0
			game.Players.LocalPlayer.Character["Left Leg"].Transparency = 0
			for i,v in pairs(game.Players.LocalPlayer.Character:GetChildren()) do
				if v:IsA("Hat") then v.Handle.Transparency = 0
					
				end
			end
	
	game.Players.LocalPlayer.Character.Torso:FindFirstChild("Emit"):Remove()
	game.Workspace.CurrentCamera.CameraSubject = game.Players.LocalPlayer.Character.Humanoid
game.Workspace.CurrentCamera.CameraType = "Custom"
	
end)