Video: Using the power of maths and science, Vsauce determined that an average-sized fist performing a Rising Dragon Fist would apply enough force to decapitate a normal human being. Then they built a dummy to test their work.
Jake and some special guests came to this conclusion by taking Street Fighter's most powerful rising uppercut, courtesy of Ken Masters, and applying it to Russian wrestler Zangief. It would take a pretty tremendous amount of force to knock a man his size an entire body length into the air. Enough force that the normal human body wouldn't survive the impact.
One day I will have a job that involves dismembering replica human bodies for science. Until then, I live vicariously through these guys.