If a planet with ten times the surface gravity of Earth had an intelligent species like humans that had evolved to tolerate acceleration equal to a multiple of

If a planet with ten times the surface gravity of Earth had an intelligent species like humans that had evolved to tolerate acceleration equal to a multiple of their surface gravity for a given time, perhaps that would open up additional launch possibilities such as a rail gun. For example humans accelerating 4g for 2 minutes over a 5,000 mile track would only achieve 10,000mph. The extraterrestrials accelerating 40g for 2 minutes over a 50,000 mile track would achieve a speed of 100,000mph. Here the larger circumference of their planet might also help, or the density of energy they dealt with on a daily basis would influence what type of launch facilities were feasible.