1. The problem statement, all variables and given/known data For the general case. I need help finding the cross product for the angular momentum. Say you have a particle at a position r= xi+yj+zk with a velocity of xi+yj+zk and a known mass. How do you find the angular momentum? 2. Relevant equations L=mvr 3. The attempt at a solution So I know how to find the cross product of r and v. It will be some xi+yj+zk. Then how do you find the angular momentum from there?