$Joule-second$ is the unit of
Work
Momentum
Pressure
Angular momentum
The unit of Stefan-Boltzmann s constant $(\sigma )$ is
The unit of potential energy is
One yard in $SI$ units is equal
If $x = at + b{t^2}$, where $x$ is the distance travelled by the body in kilometres while $t$ is the time in seconds, then the units of $b$ are
A suitable unit for gravitational constant is