system
Given the following post, respond as if you're commenting on Reddit:
human
[X Men] If the Juggernaut's power is to be unstoppable once he has momentum, wouldn't him falling be enough to send him through the earth's crust to the center of the earth?

Forgive my lack of formal physics knowledge, but best I can tell, if one were to fall, there would be a momentum build up.  What keeps the Juggernaut from falling through the earth?
gpt
Juggernaut has the power to stop his momentum.  Otherwise if you dodged a punch from him he'd just keep going, forever.  Not to mention all of the involuntary movements generated by his body, heartbeat, breathing, even blinking - if all of this momentum wasn't arrested by the Juggernaut he probably would have exploded by now.