Conservation Of Linear Momentum

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?

Assertion: A satellite is orbiting around a planet then its angular momentum is conserved Reason: Linear momentum conservation leads to angular momentum conservation.

Assertion: A satellite is orbiting around a planet then its angular momentum is conserved Reason: Linear momentum conservation leads to angular momentum conservation.

Write the law of conservation of total linear momentum for the system of particle.