Recent content by Db75

Yes. Thanks for your input.

OK this is what I have now: F = delta(mv) / delta t = (density x exit area x v^2) But, I have no idea what v is. I know that the acceleration of the rocket is equal to (v^2 / 2) / displacement, and so F = ma which equals the force of the reaction mass. Hmm I may have answered my...

Hi, I understand that the force with which a water rocket is accelerated is equal to the force of the reaction mass (or water) sent in the other direction. If the change in mass of the water as it is being ejected can be calculated from this equation: change of M = area of exit x water...