Conservation Of Momentum - Law of motion

Conservation Of Momentum


  • If no external force acting on a system then momentum of a system is conserved.




  • Momentum of a individual member may change due to applications of force. This force should not be a force external to system this should be internal force. The sum of momentum before and after the incident will remain same.




  • If there is external force then there is no conservation of momentum.




  • Newton’s third law of motion lead to the law of conservation of momentum.

Derivation of conservation of momentum

The Logic Behind Momentum Conservation (Newton’s Third Law)