Question

State and prove law of conservation of linear momentum.

Answer 1

law of conservation of linear momentum :
according to this law the total linear momentum of an isolated system always remain constant or conserved when no force is acting on the Ed system.
momentum of body A before collision =m1u1
momemtum of body B before collision =m2u2
total momemtum before collision =m1u1+m2u2
momemtum of body A after collision =m1v1
momemtum of body B after collision =m2v2
total momemtum after collision =m1v1+m2v2

Answer 2

Explanation:

law of conservataion of momentum state that if no external force is applied on the body the momentum is conserved in system

so, her it states that if external force =0 total momentum before collision is total momentum after collision.