Question

law of conservation of momentum​

Answer 1

Answer:

One of the most powerful laws in physics is the law of momentum conservation. ... For a collision occurring between object 1 and object 2 in an isolated system, the total momentum of the two objects before the collision is equal to the total momentum of the two objects after the collision.

Answer 2

Explanation:

change of momentum of A before collision =m1u1

change of momentum of A after collision =m1v1

change of momentum of B before collision =m2u2

change of momentum of B after collision =m2v2

rate of change of momentum of A =m1(v1-u1)/t=f1. eq.1

rate of change of momentum of B =m2(v2-u2)/t=f2. eq, 2

f1=-f2

m1(v1-u1)/t=m2(v2-u2)/t

m1v1-m1u1=m2v2-m2u2

m1v1+m2v2=m1u1+m2u2