Which of the following statements are true?
1) kinetic energy is conserved.
2) linear momentum is conserved.
3) angular momentum of the stick+puck is conserved about the center of mass of the combined system.
4) angular momentum of the stick+puck is conserved about the (stationary) point where the collision occurs.
1.1 only
2.2 only
3.3 only
4.4 only
5.1 & 2
6.1 & 4
7.2 & 4
8.1 2 & 3
9.2 3 & 4