If final momentum is equal to initial momentum of the system then

Angular momentum is equal to

What is the total momentum of the system of particle?

The principle of conservation of linear momentum states that the linear momentum of a system

Suppose we define a quantity Linear Momentum as linear momentum =mass x speed. The linear momentum of a system of particles is the sum of linear momentum of the individual particles. Can we state a principle of conservation of linear momentum as linear momentum of a system remains constant if no external force acts on it?

Suppose we define a quantity Linear Momentum as linear momentum =mass x speed. The linear momentum of a system of particles is the sum of linear momentum of the individual particles. Can we state a principle of conservation of linear momentum as linear momentum of a system remains constant if no external force acts on it?

The momentum of a system is defined

The momentum of a system is defined

Show that the total linear momentum of a system of particles is conserved in the absence of any external force. Also show that total linear momentum of the system is equal to the product of the total mass of the system and the velocity of its centre of mass.