How can a human travel at the speed of light?

Answer 1

Assuming that it is indeed possible for a sole entity apart from light to travel at the speed of light, it would require an acceleration no greater then the maximum g-force a human can withstand. That being said, the average human can withstand safely a g-force of about 3G. A trained human can withstand a g-force of about 6G per se. So assuming this particular human is to travel at light speed, they would still need to maintain regular cycles such as eating, drinking and so on. That being said no more then 3G is realistic. After doing calculations, using t = (V2 - V1)/a, plugging cin for v2, 0 in for v1, and 3G in for a, we find the time required to reach light speed is approximately 31 years. So to now answer the question, a human could travel at light speed by spending 31 years at an acceleration of 3G. Take into account however, that time will slow down for the person approaching the speed of light. If he was able to reach the speed of light it is theorized that time would stop all together.

Answer 2

No. Nor can any object that travels at speeds below the speed of light, move at the speed of light. Subatomic particles in particle accelerators come very close, though.