Class 7: (Box Sliding against a wall example problem)
Class 8: (Various Free Fall and Free Body problems)
Class 12 Videos: Eggs, Tennis Ball, Golf Ball (1:19), More Golf Balls (see 6:32, 9:27, 10:23)
Class 14: (center of mass for boat with two people)
Class 15: Calvin Plays a record
Class 16: (Practice with Torque)
Class 17: (Free Body Diagram: Rolling down a hill)
Class 19: (Angular Momentum)
Class 20: (Springs)
Class 21: (Springs)