system
Given the following post, respond as if you're commenting on Reddit:
human
Eli5: Why does jumping off two legs result in roughly the same height as when using one leg? It would seem 2x the upward force should result in a much higher jump.
gpt
Most people can jump higher off of two legs. All people can jump higher off two legs if they are standing still. The reason “leaping” is a thing and some people can get really high off of one leg is because they are moving forward. When a basketball player makes a running leap, he converts some of his forward motion into upward motion. He sort of uses his forward leg as a “ramp. The forward foot is planted on the ground and the legs is kept sort of stiff. For the body to keep moving forward the leg forces it to also go up. It’s very awkward to do this with two legs.