Answer to Question #84133 in Mechanics | Relativity for Akash kumar kheti

Question

With what constant velocity must a person travel from the centre to the edge of our galaxy in order to cover the distance of 3.0 × 104 light years in 40 years?

Answer 1

Calculate the velocity of the person by the relation as follows:

V=D/T

Here D is the total distance to be travelled and T is the time taken for travelling the distance.

Substitute 3×〖10〗^4light year =2.83×〖10〗^20 m and 1.26×〖10〗^(9 ) sec for T.

V=(2.83×〖10〗^20 m)/(1.26×〖10〗^(9 ) sec) = 2.24×〖10〗^11 m/sec

V=8.08×〖10〗^11 km/hr