Question

define momentum of force and state it's si unit​

Answer 1

The moment of force is equal to the product of the magnitude of the force and the perpendicular distance of the line of action of force from the axis of rotation. S.I. unit of moment of force is Newton metre Nm.

Answer 2

$\sf \huge \implies$

the units of momentum will be the product of the units of mass and velocity. Mass is measured in kg and velocity in ms -1, therefore, the SI unit of momentum will be kgm/s (-1).