system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: If humans cannot withstand a 9G acceleration, how come some Formula 1 drivers managed to walk away, with minor injuries, after impacts that are subsequently higher (eg, Verstappen and his 51G impact, and Grosjean's 67G crash)?
gpt
You can’t survive *sustained* high g acceleration because your heart isn’t strong enough to pump against it and you pass out.

Very brief but intense acceleration events like an F1 car going for a ride into the wall don’t have this issue.

Those have a separate problem where your bones stop but your organs don’t, leading to the possibility of serious internal injuries.