system
Given the following post, respond as if you're commenting on Reddit:
human
[DC] When superman punches someone with high durability, they fly backwards several meters. Why doesn't superman fly backwards the same distance?
gpt
All people who fly in the manner of superman (no wings or obvious propulsion) can control their momentum in the air.

When Supes hits someone, he forces himself to stay in the same place. The other person either tries to stay and fails because supes is so strong, or takes the hit and flies backwards because it hurts less.