You and your friend Paul want to have a bet on how fast it cantake to reach another friend Peter who is near the star Sirius B.Knowing that the star has a proper length of 8.6 light years fromEarth, Paul thinks that since the maximum speed of your ship is 70%that of the speed of light, it will take about 9 years to getthere. However, you reason that around 12 years will make moresense.
a)Â Â Â Â Â Whois right from the perspective of you and Paul?
b)Â Â Â Â Â Whenyou reach Peter and explain the bet, he disagrees about who wasright, why is that?
