All that pretty black, blue, purple, yellow brown and green(not gangrene)will migrate to the bottom of your foot and around the edge somewhat. What fun!

As long as you are doing physics, don't forget air resistance, the Coriolis effect, celestial gravitational alignments, tension strength of bone, tissues, etc. tension and tensile strength of the material encountered, any retrograde motion you were able to effect, if any. Good Luck!