What's the best way to apply a force to a character?

I wanted a character to get pushed away without any lag. I've tried two ways of applying a force to a character. One is that I applied BodyForce to the root of the character and destroying the BodyForce after 0.1 seconds. Sadly, when someone has high latency, it wouldn't work sometimes. I've also tried the velocity property on the root of the character. It works in studio, but not in the server.

EDIT: What I mean is an explosion-like force to a character.

Usually I use BodyPosition to apply force. I do something similar to what you mentioned.

ui.InputBegan:Connect(function(Key, Chatting)
	if Chatting == false then
		if Key.KeyCode == Enum.KeyCode.F then	
			local bf = Instance.new("BodyPosition")
			bf.MaxForce = Vector3.new(0,math.huge,0)
			bf.Position = Character.HumanoidRootPart.Position + Vector3.new(0,15,0)
			bf.P = 7500
			bf.D = 550
			bf.Parent = Character.HumanoidRootPart
			while Jumped do
				wait()
				if math.floor(Character.HumanoidRootPart.Position.Y) <= (math.floor(bf.Position.Y) + 2) and math.floor(Character.HumanoidRootPart.Position.Y) >= (math.floor(bf.Position.Y) -2) then
					bf:Destroy()
					break
				end
			end
		end
	end
end)

on this script I create a BodyPosition on the Character.HumanoidRootPart so it moves the entire character. I put the goal 15Y+ from the current position, and then let it run smoothly.

When the position reaches a value that's more than 15 by 2, or less than 15 by 2, it will instantly be destroyed to give momentum to the character and also make it look more smooth.

If you're curious about the functions I used and what they do, I used:

math.floor to turn the value into an absolute value. Example of that would be 20.343434 turned into 20.