Khan Academy Static

Categorizing the different types of collisions can be useful. Here, you'll learn what it means for a collision to be elastic or inelastic and what that implies mathematically.

10016_Solving_elastic_collision_problems_the_hard_way.html

10018_How_to_use_the_shortcut_for_solving_elastic_collisions.html

10017_Deriving_the_shortcut_to_solve_elastic_collision_problems.html

10015_Elastic_and_inelastic_collisions.html