A sticky ball collides with and sticks to rod that is floating free in space. Consider the system of the ball and the rod, and let E be the kinetic energy of the system, p the linear momentum of the system, and L the angular momentum of the system. List which of these quantities are conserved about the point where the putty strikes the rod.
1. p; E
3. L; E
4. L; p; E
7. L; p
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