What happens if I am traveling near the speed of light then I fire a gun?

Answers:1   |   LastAnswerAt:2010.10

Question
Joey G
Asked at 2010.10.19 20:06:07
Okay, I understand that according to the Special Theory of Relativity, it's impossible to travel faster than light. So theoretical question: Let's say that I am traveling just a few m/s below the speed of light and I fire a gun towards my direction of travel, what happens to the bullet? Does it stay in the barrel? Does it hover mid-flight when it reaches the speed of light?
answer Anfemfjs  Answered at 2010.10.19 20:06:07
From your perspective, it will leave the barrel just like it would if you weren't moving at all. An person observing your experiment "at rest" will see the bullet having a speed slightly larger than you (but still below the speed of light) and thus leaving the barrel very slowly. At very high speeds, you can't just add two speeds together like at low speeds (see the wikipedia article linked below).
1

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