CENTER OF MASS
When observing objects with a known mass in a closed system, the center of those masses can then be determined. If these objects are moving at a constant velocity, their center of mass will also move at a constant velocity. This holds true even it these objects collide. To determine the center of mass of a closed system, the positions of each object on a coordinate system must be known. The equation used for finding the center of mass is as such:

where m is the mass of the respective objects, and x is their position. The equation will determine the position of the center of mass. In our calculations, we used this equation twice to determine the x and y positions of the center of mass. Once the positions of the objects and center of mass were determined, they were depicted graphically.