After the Big Bang, all the Universe particles have been released by the initial energy and ejected
in a projectile motion. In other words, due to the projectile motion of the Big Bang, an initial energy
have been given to the particles and they have been ejected at a very high speed and after billions of
years or at the same time the homogeneity of the Universe, they have reached a relative equilibrium.
At the moment of the Big Bang, there was rotational motion. In this motion, the rotational velocity
depends on two parameters: angular velocity (ω) and rotational radius (r). By using of these two type
of motion, the general calculation equation of the Universe velocity can be write. In this paper, based
on the this relation and comparing it with Hubble's law equation, it can be said that Hubble's law
calculates the rotational velocity of galaxies around the center of the Universe.
