Review of Newton's Third Law (Action/Reaction) as applied to rocket thrust. Designed plan and conducted internet research to create a more robust (waterproof) means to quantify thrust of water rockets. Discussed important differences in chemical/combustion vs. water rockets, leading to conclusion that de Laval nozzle is probably less appropriate than a tapered cone nozzle. Also discussed fins, nose cone, and aerodynamic aspects of our experimental water rocket design.