Collisions occur everywhere around you. Right now, molecules of gas are constantly colliding with each other in the air that surrounds you as well as colliding with your clothes and skin. In the notes, you will read about how to analyze collisions using the momentum principle and energy principle. You will also read about different kinds of collisions. Later you will read how collisions lead to the discovery of the nucleus.

• Elastic Collision of Two Identical Carts
• Maximally Inelastic Collision of Two Identical Carts
• A Ping-Pong Ball Hits a Stationary Bowling Ball Head-on