Question

distance from earth to centre of milkyway galaxy is 25 thousand years of light. if a spacecraft want to go to centre of galaxy with constant velocity and 40 years period. how much spacecraft velocity relative to centre of galaxy?

Answer 1

try to divide the distance by the velocity expression as in general relativiy...time is given so velocity can be calculated..

Answer 2

i still confused

Answer 3

\[U \prime = \gamma(U - V)\] ?

Answer 4

use the general relativity's equation equivalent for distance=speed X time...

Answer 5

25000 years of light : 40 years = u' ??

Answer 6

625c = U'

Answer 7

i get it , thanks