At one instant, force F $=4\mathrm{.}09$ j N acts on a $0\mathrm{.}930$ kg object that has position vector

$7=6\mathrm{.}251-6\mathrm{.}25$k m and velocity vector $=-1\mathrm{.}76+1\mathrm{.}76$k$)$ m$/$s About the origin and in unit$-$

vector notation, what are $($a$)$ the object's angular momentum and $($b$)$ the torque acting on the object?