I am given the coordinates of the center of mass of a particle $(x_G,y_G)$ with respect to time $t$, I want to plot a graph the shows the change in the position of the particle with respect to time. The first variable is the time $t$, I have thought about taking the second variable to be $\sqrt{x_G^2 + y_G^2}$.
Is this a good idea? Or how can we detect the position better?