[quote=@Crimmy]
For a Newtonian particle, with p = mu, the momentum is directly proportional to the velocity. The relativistic expression for momentum agrees with the Newtonian value if u ≪ c, but p approaches ∞ as u -> c.
[/quote]

I don't know all the variables but I think it describes what happens if something moves faster than the speed of light. Do I have that right?