I don’t really want to use BodyVelocity because it’s deprecated. I don’t really know a how to use linear velocity or vector force. This function is for applying knock back.
function module.BodyVelocity (parent, HRP, Knockback, stayTime)
local bv = Instance.new ("BodyVelocity")
bv.MaxForce = Vector3.new(math.huge,0,math.huge)
bv.P = 50000
bv.Velocity = HRP.CFrame.LookVector * Knockback
bv.Parent = parent
Debris:AddItem(bv,stayTime)
end