Which statement is NOT a postulate of special relativity?

  1. The speed of light is the same for all inertial observers
  2. Mass is constant at all speeds
  3. Laws of physics are the same in all inertial frames
  4. Both A and B are postulates
Answer

B) Mass is constant at all speeds

Mass increase is a consequence. SLO P-11-F-04 · Knowledge

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