Physics studies the natural world through measurement and observation of fundamental forces like momentum and energy. The law of conservation of linear momentum states that in an isolated system without external forces, total momentum remains constant over time. Similarly, the law of conservation of angular momentum provides that in an isolated system without external torque, the total angular momentum of an object is conserved. These conservation laws help explain motion and are important principles in physics.

1. Chapter 1
Physical world & Measurement

4. What is Physics?

6. Physics in relation with
Technology & Society

7. Fundamental Forces in nature

9. v

11. Conservation Laws

13. Law of Conservation of Linear
Momentum
• It states that in an “Isolated system if no external forces are there,
then the momentum will remain conserved”.

14. Law of Conservation of Angular
Momentum
• It states that in an “Isolated system in the absence of external torque
the total angular momentum of a body will remain conserved”. It is
rotational analogue form of conservation of linear momentum.