- #1
um0123
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I have questions:
1) twin 1 goes on a rocket flys to pluto at .99c and comes back to Earth (all uniform motion, somehow). When he gets back he sees twin 2 is older. But since twin 2 was moving away from him at .99c why doesn't twin 2 see him as older?
2) Why does something gain mass as it approaches c? Appearently when you hit c you have infinite mass, and therefore need infinite energy to continue, so you can't hit c, but why do you even gain mass? i know you use the energy-mass equivalence to find out how much energy is turned to mass, but why can't it just get faster?
I had more but i lost my train of thought, so more to come!
1) twin 1 goes on a rocket flys to pluto at .99c and comes back to Earth (all uniform motion, somehow). When he gets back he sees twin 2 is older. But since twin 2 was moving away from him at .99c why doesn't twin 2 see him as older?
2) Why does something gain mass as it approaches c? Appearently when you hit c you have infinite mass, and therefore need infinite energy to continue, so you can't hit c, but why do you even gain mass? i know you use the energy-mass equivalence to find out how much energy is turned to mass, but why can't it just get faster?
I had more but i lost my train of thought, so more to come!
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