Net Force on Rocket Net force f = f t – f d – (m ave x g) F = 151.3 kg m/s2 – 0 – ((0.3 + 0.7 kg)/2) x (9.8 m/s2) = 146.4 kg m/s2 or 146.4 N Note: M ave = mass of empty rocket + mass of water selected Mass of rocket was weighted at 300 g, or 0.3 kg Water selected was 0.7 kg f d is the drag coefficient and is very low in this case
{"Image DocumentName": "Water Exit Velocity & Thrust", "Image ImageDescription": "Water exit velocity V = \u1e41 / \u03c1A = kg/s / (998 kg/m3)( m2) = m/s. Rocket thrust ft = \u1e41 x V = kg/s x m/s = kg m/s2 or N.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}