Question

what is elementary idea of conservation of momentum​

Answer 1

Answer:

conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant. ... Before launch, the total momentum of a rocket and its fuel is zero.

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Answer 2

• The total momentum of a system is always conserved, which is the principle of conservation of momentum​, is a direct consequence of Newton’s third law of motion.
• Rockets motion is an example of conservation of momentum law.
• The momentum is known as mas in motion, if an object is moving, then it has momentum, and also it has its mass in motion.