Derive the law of conservation of momentum from Newtons thirds law?

Deduce law of conservation of momentum from Newton's third law of motion. Consider two bodies A and B of masses mA and mB moving in the same direction along a straight line. ... Thus, total momentum of the two bodies is conserved provided no external force acts on them. This proves the law of conservation of momentum.

Hope this helps you

are there answer choices to this question? this seems like a question where you have options to choose from.

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.