This isn’t the end-all-be-all answer, but see if this helps. https://swingcatalyst.com/resources/articles/ground-reaction-force
https://golf.psu.edu/biomechanics-of-golf/biomechanical-assessment-of-3d-data/ground-reaction-forces
For many, we don’t understand everything our optometrist, cardiologist, neurosurgeons, know/do while they help. It’s ok to leave certain topics to experts. That said, if your curiosity is peaked, by all means, google away, ask questions, and try to learn.