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| Tags: bodies, moving, relative, speeds, symmetric, two |
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#11
5 Days Ago
posted to sci.physics.relativity
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Are the relative speeds of two moving bodies symmetric?
On May 11, 2:45*pm, Albertito wrote:
On May 11, 7:28 pm, Mike wrote: On May 11, 7:25 am, Albertito wrote: On May 11, 11:51 am, Mike wrote: On May 11, 5:38 am, Albertito wrote: Let two bodies, A and B, with equal masses, move inertially along a straight line. Velocity of A wrt B is V_ab, and velocity of B wrt A is V_ba. Since both bodies are inertially moving along a straight line, we assume V_ab = - V_ba will always hold, so we say both velocities are symmetrical. Suppose now, body A accelerates during a time t at constant a_A along the same straight line to yield a final velocity V_ab'. Can we still claim the new velocity of B wrt A is V_ba' = -V_ab'? IOW, isn't it reasonable to claim that the new V_ba' is actually not that new, but V_ba' = - k*V_ab', for a real k 1? If it is true that V_ba' = - k*V_ab', for a real k 1, after the acceleration a_A and V_ab' V_ab, then, can we conclusively say that acceleration a_A has created an eventual gravitational field, by claiming that both masses are no longer equal? "Hey, ****ing moron, you can't even trolling! I'll teach you how to troll in this NG. Find some flaws in a well-established theory. Once, you have convinced all of us those flaws are real inconsistencies, then we'll let you propose a new theory which can repair those flaws. Then, and only then, we will discuss about your 'wonderful theory'. And then, all we'll see the great troll you can be. Until then, **** off, moron! " http://groups.google.com/group/sci.p...sg/d1133f915ff.... One troll trolls the other troll. Idiot Mike Deer Mike: Are you one of those shrunken heads needing to call how idiotic are the others in order to forget the irreparable idiocy that resides in you?- Hide quoted text - - Show quoted text - I just quoted you troll. Don't you recognize your own statements? Mike Then, stop quoting me. Quote your own statements, troll.- Hide quoted text - The bell t[r]olls for thee, idiot Mike - Show quoted text - 
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#12
3 Days Ago
posted to sci.physics.relativity
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Are the relative speeds of two moving bodies symmetric?
On May 11, 2:37*pm, Albertito wrote:
On May 11, 7:04 pm, Igor wrote: On May 11, 5:38 am, Albertito wrote: Let two bodies, A and B, with equal masses, move inertially along a straight line. Velocity of A wrt B is V_ab, and velocity of B wrt A is V_ba. Since both bodies are inertially moving along a straight line, we assume V_ab = - V_ba will always hold, so we say both velocities are symmetrical. Suppose now, body A accelerates during a time t at constant a_A along the same straight line to yield a final velocity V_ab'. Can we still claim the new velocity of B wrt A is V_ba' = -V_ab'? IOW, isn't it reasonable to claim that the new V_ba' is actually not that new, but V_ba' = - k*V_ab', for a real k 1? If it is true that V_ba' = - k*V_ab', for a real k 1, after the acceleration a_A and V_ab' V_ab, then, can we conclusively say that acceleration a_A has created an eventual gravitational field, by claiming that both masses are no longer equal? Just one question. *What exists in empty spacetime that would make them not be symmetric? Energy, a lot of energy. Empty spacetime is not actually empty. It is in SR. Case closed.
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