COM and Collision

Centre of mass
1. Centre of mass/COM//Two point masses/Centre of mass of system of discrete particles.
2. Centre of mass/COM/Two rigid bodies/COM of individual bodies given/Has uniform density given.
3. Centre of mass/COM/COM after removal of a part of body.
4. Centre of mass/COM/COM of continuous distribution of particles.
5. Centre of mass/COM/COM of some common objects/COM of half ring/COM of segment of a ring/COM of half disc/COM of sector of a disc/COM of hollow hemisphere/COM of Solid hemisphere/ COM of hollow cone/COM of solid cone.
6. Centre of mass/COM/COM of additive objects.
7. Centre of mass/COM/Motion of centre of mass.
8. Centre of mass/COM/Law of conservation of Linear momentum/Displacement of COM.
9. Centre of mass/COM/Net force on a system in a particular direction is zero.
10. Centre of mass/COM/Jump together/Jump one after the other.
11. Centre of mass/COM/Explosion due to internal force.
12. Centre of mass/COM/Motion of two masses connected to a spring/Block bullet system/If bullet moves out of the block.
13. Centre of mass/COM/Law of conservation of mechanical energy.
14. Centre of mass/COM/Impulse.
15. Collision/Head on collision/Oblique collision/ Co-efficient of restitution(e).
16. Collision/Type of collision.
17. Collision/Head on elastic collision/Head on inelastic collision of two particles.
18. Collision/Oblique collision(2D).
19. Collision/Collision in Projectile motion.
20. Collision/Collision with floor.
21. Collision/Variable mass/Rocket propulsion.
22. Collision/Variable mass/Rocket propulsion/Force on rocket propulsion.