Videos for Mechanics (Unit 2) by Martyn Overy - Thursday, 1 March 2012, 7:58 PM Number of replies: 0 Here is a great set of introductory videos for Mechanics from Khan Academy Introduction to Gravity Gravity for Astronauts in Orbit Newton's First Law of Motion Newton's Second Law of Motion Newton's Third Law of Motion Calculating Acceleration Brick or Feather? Projectile at an Angle Permalink