Question

a) What is law of conservation of momentum?​

Answer 1

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When two bodies collide with each other in the absence of an external force, then the total final momentum of the bodies is equal to their total initial momentum.

$\huge\mathfrak\red{example \; - }$

Motion of rockets.

Answer 2

Answer:

Conservation of momentum, general law of physics according to which the quantity called momentum that characterized motion never change in an isolated collection of objects; that is, the total momentum of a system remains constant. ...