1. Chapter 9 Center of Mass and Linear Momentum
In this chapter we will introduce the following new concepts:
-Center of mass (com) for a system of particles The velocity and acceleration of the center of mass
-Linear momentum for a single particle and a system of particles
We will derive the equation of motion for the center of mass, and discuss the principle of conservation of linear momentum
Finally we will use the conservation of linear momentum to study collisions in one and two dimensions and derive the equation of motion for rockets
(9-1)

2. (9-2)

3. (9-3)

4. (9-4) . C

5. O m1 m3 m2 F1 F2 x y z
(9-5)

6. O m1 m3 m2 F1 F2 x y z
(9-6)

7. (9-7)

8. m v p
(9-8)

9. O m1 m3 m2 p1 p2 p3 x y z
(9-9)

10. (9-10)

11. (9-11)

12. Fave
(9-12)

13. O m1 m3 m2 p1 p2 p3 x y z
(9-13)

14. (9-14)

15. (9-15)

16. (9-16)

17. m
v1i
v1f = 0
v2f
v2i = 0 x
(9-17)

18. v2i = 0 m1 m2
v1i
v1f
v2f x
(9-18)

19. m1 m2
v1i
v1f
v2f
v2i = 0 x
(9-19)

20. (9-20)

21. (9-21)

22. vf vi
Mi/Mf O
(9-22)