Why does my Body Velocity go too fast when I aim it into the sky?

Code: Normal Script:

script.Parent.direF.OnServerEvent:Connect(function(pl, mouse)
local plr = pl
    local char = plr.Character or plr.CharacterAdded:wait()
    local hum = char.Humanoid
    script.Parent.Parent.Parent.Data.Tries.Value = script.Parent.Parent.Parent.Data.Tries.Value + 50
    script.Parent.Parent.Parent.Data.LeftMaina.Value = script.Parent.Parent.Parent.Data.LeftMaina.Value - 40
    local AlreadyTouched = false
    --local ray = Ray.new(char.HumanoidRootPart.CFrame.p, mouse.p)
    local trident = game.ReplicatedStorage.Trident:Clone()
    trident.BrickColor = BrickColor.new("Bright blue")
    trident.Material = Enum.Material.Neon
    trident.CanCollide = false
    trident.CFrame = char.HumanoidRootPart.CFrame*CFrame.new(0,3,0)
    trident.CFrame = CFrame.new(trident.CFrame.p,mouse.p)*CFrame.Angles(0,math.rad(180),0)
    trident.Parent = char

    local BV = Instance.new("BodyVelocity")
    BV.MaxForce = Vector3.new(math.huge,math.huge,math.huge)
    BV.Velocity = mouse.p*1
    BV.Parent = trident
end)

Local Script:

local Player = script.Parent.Parent.Parent
local mouse = Player:GetMouse()
local UIS = game:GetService("UserInputService")
local Debounce = false
local mouse = game.Players.LocalPlayer:GetMouse()

wait(4)
local remote = script.Parent.direF
UIS.InputBegan:Connect(function(Input, IsTyping)
    if IsTyping then return end
    if Player.Lipa.Wata.Value == 1 then 
    if Input.KeyCode == Enum.KeyCode.R then

        if Debounce == true then return end
        Debounce = true
        if Player.Data.Level.Value >= 20 and Player.Pala.Kfar.Value >= 40 then
            script.Parent.Parent.Parent.Pala.Kfar.Value = script.Parent.Parent.Parent.Pala.Kfar.Value - 30
        for i = 1,3 do
        remote:FireServer(mouse.Hit)
        wait(2)
    end


        end
            wait(1) 
        Debounce = false
    end

    end
    end)

I cloned a union part and gave it a body velocity. The problem here is the tridents. They face the direction where my mouse is but they go in a straight line different from where to mouse is pointing.

This GIF shows me firing them at close range: https://gyazo.com/c9ca8b2993bcefca1524df45e186312a

This GIF shows what happens when my mouse goes too far: https://gyazo.com/054f75930e6e2bf7dc90a8e00108023c

You can't even see the trident when I place it somewhere off the baseplate. That's how fast it goes.