S.i unit and dimension of angular momentum?

Answer : The SI unit for is ##\quad kg.m^2.s^{ -1}## and its dimension is ##M.L^2.T^{ -1}##.

Explanation : Angular Momentum is the rotational motion equivalent of the Linear Momentum of Translational motion. It is defined as the moment of Linear Momentum.

##\vec{L} \equiv \vec{r}\times\vec{p}= \vec{r}\timesm\vec{v}##

##L = r.mv.\sin\theta; \qquad \sin\theta ## is a unitless quantity. SI units for ##m, r## and ##v## are, respectively, ##kg##, ##m## and ##m.s^{ -1}##.