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NASA Thrust Equation gets destroyed.
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[quote:oniongrass:MV8zOTg5OTIyXzcyMjM1MjQ0XzUwNzczRTE4] [quote:Anonymous Coward 77001174:MV8zOTg5OTIyXzcyMjM0OTQ0X0U0OUVCNjlD] [quote:oniongrass:MV8zOTg5OTIyXzcyMjM0NjMzXzNFRTdGMkM1] [quote:Anonymous Coward 77431166:MV8zOTg5OTIyXzcyMjM0NDY0X0RFNzA0NzRE] [quote:oniongrass:MV8zOTg5OTIyXzcyMjM0Mzk5XzIyMTYzMUJB] [quote:Anonymous Coward 58747496:MV8zOTg5OTIyXzcyMjMxNDM1X0UzREU3M0FD] [quote:oniongrass:MV8zOTg5OTIyXzcyMjMwNjIxXzQ2OTAzNUZG] [quote:Anonymous Coward 54328591:MV8zOTg5OTIyXzcyMjMwMzg4X0MzNjhBNzNB] [quote:syncro:MV8zOTg5OTIyXzcyMjMwMjQxXzE3QzMzQUE1] [quote:Anonymous Coward 54474630:MV8zOTg5OTIyXzcyMjMwMTQ3X0ZDRTYyMUM5] [quote:Anonymous Coward 54474630:MV8zOTg5OTIyXzcyMjMwMTMzX0I0Q0E3MzE3] A rocket doesn’t blow chunks of itself off. Try again. [/quote] Solid chunks [/quote] How small does a chunk have to be to no longer have mass? Liquid or gas is kind of like a bunch of chunks. [/quote] Solids are not fluids. There are three different states of matter you know [/quote] Not sure who's trying to prove what here, but conservation of momentum applies to solids, liquids, gases, plasmas ... every state of matter. Total momentum is conserved unless an external net force is applied. That's why rockets work. [/quote] Fluids move due to pressure gradient force. The pressure broke apart the soda can and physically pushed it. If there is nothing to push she. The gas moves to low pressure, there is no opposite force [/quote] Your problem is that you're thinking of force. F = ma is what Newton said. So one could conclude that with no external force, there's no acceleration. But he was wrong in the case of masses that change. That conclusion would be wrong. Actually it's F = dp/dt = ma + v dm/dt so with no external force, momentum is conserved. And that's why rockets work. Because of the nonzero v dm/dt term. [/quote] So Newton was wrong? Do you have any evidence of this? [/quote] Yeah, here are two proofs. (1) Look at any modern physics textbook that deals with rocketry. Or just look up "conservation of momentum" and see that it's considered a fundamental principle of physics. (2) Rockets work. [/quote] Dude that’s not proof [/quote] I cannot force you to understand. The physics and engineering professions will be OK without your contributions. Our loss is gender studies' gain. [/quote]
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