Assess students' ability to apply conservation of linear momentum to solve one- and two-dimensional collision problems (elastic and inelastic). Tasks include setting up vector component equations, using kinetic energy conservation or coefficient of restitution for elastic collisions, solving for final velocities (including perfectly inelastic "sticking" cases), computing impulse and center-of-mass motion, and analyzing special cases such as stationary targets, equal masses, and glancing collisions. Problems require algebraic manipulation, numerical solution, and correct sign/unit conventions.