9.3 Conservation of momentum

Question 1

What is Newton’s third law of motion?

Answer 1

» When two objects interact, they exert equal and opposite forces on each other

Question 2

What is a force pair?

Answer 2

» Two forces must be one of the same type
» Acts on different objects

Question 3

What is the principle of conservation of momentum?

Answer 3

» That for a system of interacting objects, the total momentum reaimins constant, provided no external resultant foce acts on the system