"<a href=""http://www.youtube.com/watch?v=zJt8yzR2aoY&amp;t=1m12s"">1:12</a> is wrong. a 70kg person at 463m/s has a kinetic energy of 7",500 KILO joule (m*v^2/2=70*463^2/2) which is 1785 kilo calories since 100ml of cola is 43 kilo calories - you need to drink  4.15 Liter (~1.1 US Gallon) - not a sip.