How is the Speed Limit Enforced?
We have now seen that if things could travel faster than the speed of light, the Principle of Relativity would be violated.
Question: How is this speed limit enforced? Why can’t we just keep adding energy to the object which will cause its velocity to keep increasing??
Answer: As we add energy to the object, its mass increases also which makes it harder to accelerate!
How can this be?? Isn’t mass a property of the object, an absolute quantity? It is in classical physics, but . . . .