Which statement describes what happens when bret runs up a flight of stairs? his kinetic energy increases. his potential energy decreases. his kinetic energy is converted into potential energy. his potential energy is converted into kinetic energy.

Estimate the schwarzschild radius (in kilometers) for a mini-black hole formed when a superadvanced civilization decides to punish you (unfairly) by squeezing you until you become so small that you disappear inside your own event horizon. (assume that the your weight is 50 kg)