If a galaxy had no dark matter,how would the velocity (v)of a star that orbited far outside the visible extent of the galaxy depend on its distance (r)from the center of the galaxy? A)ν ∝ r⁻² B)ν ∝ r⁻¹ C)ν ∝ D)ν ∝ r E)ν ∝ r²

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The Answer of If a galaxy had no dark matter,how would the velocity (v)of a star that orbited far outside the visible extent of the galaxy depend on its distance (r)from the center of the galaxy? A)ν ∝ r⁻² B)ν ∝ r⁻¹ C)ν ∝ D)ν ∝ r E)ν ∝ r²

If a Galaxy Had No Dark Matter,how Would the Velocity