Hubble's law relates the recessional velocity $v\,$ of a galaxy to its distance $d\,$ from Earth.

What is the correct relationship between $v\,$ and $d$ , and what is the unit of the Hubble constant $H_0\,$ in SI base units?

Relationship: $v$ is proportional to $d$ ; SI base unit of $H_0$ is $s−1\text{s}^{-1}$

Relationship: $v$ is proportional to $1d\frac{1}{d}$ ; SI base unit of $H_0$ is $s−1\text{s}^{-1}$

Relationship: $v$ is proportional to $d$ ; SI base unit of $H_0$ is $s−1\text{m s}^{-1}$

Relationship: $v$ is proportional to $1d\frac{1}{d}$ ; SI base unit of $H_0$ is $s−1\text{m s}^{-1}$

Hubble's law relates the recessional velocity $v\,$ of a galaxy to its distance $d\,$ from Earth.

What is the correct relationship between $v\,$ and $d$ , and what is the unit of the Hubble constant $H_0\,$ in SI base units?

Relationship: $v$ is proportional to $d$ ; SI base unit of $H_0$ is $s−1\text{s}^{-1}$

Relationship: $v$ is proportional to $1d\frac{1}{d}$ ; SI base unit of $H_0$ is $s−1\text{s}^{-1}$

Relationship: $v$ is proportional to $d$ ; SI base unit of $H_0$ is $s−1\text{m s}^{-1}$

Relationship: $v$ is proportional to $1d\frac{1}{d}$ ; SI base unit of $H_0$ is $s−1\text{m s}^{-1}$

6.2 Stars and the Universe

6.2 Stars and the Universe Questions