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Conservation of Momentum Video Lecture | Physics for EmSAT Achieve

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FAQs on Conservation of Momentum Video Lecture - Physics for EmSAT Achieve

1. What is the principle of conservation of momentum?
Ans. The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it. This means that the sum of the momenta of all objects before an interaction is equal to the sum of the momenta after the interaction.
2. How is momentum calculated?
Ans. Momentum is calculated by multiplying an object's mass by its velocity. The formula for momentum is: momentum = mass × velocity. Momentum is a vector quantity, meaning it has both magnitude and direction.
3. Is momentum conserved in all types of collisions?
Ans. No, momentum is conserved only in collisions where no external forces act on the system. In elastic collisions, both momentum and kinetic energy are conserved. In inelastic collisions, momentum is conserved, but kinetic energy is not.
4. Can momentum be transferred between objects of different masses?
Ans. Yes, momentum can be transferred between objects of different masses. According to the conservation of momentum, when two objects interact, the change in momentum of one object is equal and opposite to the change in momentum of the other object. This means that even if one object has a larger mass, it can still transfer momentum to a smaller object.
5. How does momentum relate to Newton's third law of motion?
Ans. Momentum relates to Newton's third law of motion because of the principle of conservation of momentum. Newton's third law states that for every action, there is an equal and opposite reaction. When two objects interact, the forces exerted on each other are equal in magnitude and opposite in direction, resulting in an exchange of momentum between the objects. This is a manifestation of the conservation of momentum.
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