ANSWERS: 2
  • are you on the train with a family member? remember the speed of light is relative.
  • Actually, the train would not be able to travel at the speed of light, so your question is moot. As objects approach speeds close to that of light, they gain mass in direct proportion to the speed relative to that of light. This is illustrated in E=Mc^2. So, the closer you get to light speed, the heavier you get, eventually you will reach a mass that is so close to infinite that there isn't enough energy in the entire universe that could move you any further. Another thing, as objects reach these relativistic speeds, they experience time more slowly than those not traveling with them. So, even if it were possible to have a train (interesting choice for a light-speed vessel, btw) traveling at the speed of light with you on board, time would have essentially stopped for you, relative to the observer. Speed is measured by dividing distance traveled by length of time. If length of time is zero, you cannot solve for speed because you cannot divide by zero. This is a paradox that cannot be resolved because nothing can travel at the speed of light.

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