system
Given the following post, respond as if you're commenting on Reddit:
human
If the temperature of something depends on the speed at which the particles are moving, we know that the minimum speed is repose and that’s the minimum temperature, the absolute zero (0 kelvin). Why if we have a maximum speed (speed of light), we don’t have a maximum of temperature?

I mean, why would happen if the particles of something were moving at the 99,999999999 (infinite 9s) of the speed of light? There must be a limit of the temperature that anything can get. Am I wrong?
gpt
Temperature is not inherently related to motion or translational degrees of freedom, but anyway we can assume you're asking about an ideal gas and carry on with the question.

For a monatomic ideal gas, there are only translational degrees of freedom, and the temperature is related to the average kinetic energy of the gas molecules.

A temperature of absolute zero means that the average kinetic energy is zero. A temperature going to infinity means that the average kinetic energy goes to infinity.

That's not a problem with relativity; the kinetic energy of a particle can be arbitrarily high even though its speed is limited by c.