Gravitational fields

Medium

Which of the following expressions does not have the same SI base units as gravitational potential?

In these expressions:

$g\,$ is the gravitational field strength at the surface of a planet of radius $R$
$v\,$ is the escape velocity from the planet's surface
$EpE_{\text{p}}$ is the gravitational potential energy of a satellite of mass $m$
$G\,$ is the gravitational constant and $M\,$ is the mass of the planet

$v^2$

$g R$

$GMR2\frac{GM}{R^2}$

$Epm\frac{E_{\text{p}}}{m}$

Gravitational fields Questions