Originally Posted by County Mike
Sauron and Darth Vader are both correct. Voldemort's an idiot.
(Calculations are assuming life in a vacuum where air resistance has no effect and the standard acceleration of gravity is 9.81m/s^2.)
only darth vader is correct saurons answer is positive 21.2 m/s
darth vader's answer as a negative 21.2 (-21.2 m/s) was properly calculated