system
Given the following post, respond as if you're commenting on Reddit:
human
Is there a *theoretical* maximum velocity for a mass with a constant thrust traveling through a vacuum?

I understand basic relativistic physics and know that as we approach the speed of light, the the effective mass of an object will increase until it will take an infinite amount of energy to keep accelerating that object.

That being said, is there an equation to determine at which velocity does an object's increase in mass render the acceleration generated by a constant thrust negligible?

Edit:

Maybe I should rephrase my question. Is there an equation to help determine at what point a ship should stop producing thrust because the acceleration generated is no longer worth the energy required?
gpt
You know how for that situation, assuming Newtonian physics, the velocity is equal to the acceleration times time?

In relativistic physics, the velocity as a fraction of light speed is equal to the hyperbolic tangent of velocity times time, and that asymptotically approaches one.