Green11

a light year is the distance that light travels in one year

this distance is aprox...300000km x 3600 seconds x 24 hours X365 days.....

after you compute all this multiply it by 4.34 and you have the distance in Km betwen the Earth and A-Centauri...

Now divide that distance by the 6000 Km your rocket is travelling and you will find the minutes needed ...then convert them to years...

the result will surpise you !!!

good luck with the calculations