3 ms·
The answer for an outside observer is: @ 1g of acceleration it would take 11 months to accelerate to the speed of light. A formula you can put in Google is: (2
by wallace_f 10y ago
The answer for an outside observer is:
@ 1g of acceleration it would take 11 months to accelerate to the speed of light. A formula you can put in Google is: (285000000/9.8)/(60x60x24).
So 39-(.475x2) = 38, and 38/.95 = 40. So 42 years is your answer.
I have no idea how to calculate the relativistic spaceship's elapsed time.
It's all wishful thinking. The fastest thing man has created, the Juno spacecraft, travels, by some quick calculations, @ 0.00147% of the speed of light.
- OscarCunningham 10y agoThis isn't how it works. As you approach the speed of light acceleration becomes less effective (i.e. you feel 1g but don't get faster at 10m/s^2). The interesting thing is that it's actually easier to calculate in the spaceship's reference frame. The two relativistic distortions cancel out and the Newtonian calculation gives the correct answer. So if you accelerate for the first half of your journey it takes you sqrt((28500000040/2)/(365246060*9.81/2)) = 6 years, and the same amount of time to decelerate, meaning 12 years in total.
- wallace_f 10y ago>you feel 1g but don't get faster at 10m/s^2). how does this work? it's consistent with what I've read about c requiring infinite energy, and I'm sure it has something to do with relativity, but I don't have an intuitive sense of it