Question

Conservation of linear momentum is a combination of ___________

(a) Newton’s second law and third law

(b) Newton’s second law and first law

(c) Newton’s first law and third law

(d) Newton’s second law and impulse force

I had been asked this question in my homework.

This is a very interesting question from Effect of Gravity topic in section Laws of Motion of Engineering Physics I

Answer 1

The correct option is (a) Newton’s second law and third law

Easiest explanation: The second and third law of motion leads to one of the most important and fundamental principles of physics called law of conservation of momentum. When no external force acts on a body, the total linear momentum is conserved.