Lecture 4 of Leonard Susskind’s Modern Physics course concentrating on Classical Mechanics. Recorded November 5, 2007 at Stanford University. This Stanford Continuing Studies course is the first of a six-quarter sequence of classes exploring the essential theoretical foundations of modern physics. The topics covered in this course focus on classical mechanics. Leonard Susskind is the Felix Bloch Professor of Physics at Stanford University. Complete playlist for the course: youtube.com Stanford Continuing Studies: continuingstudies.stanford.edu About Leonard Susskind: www.stanford.edu Stanford University channel on YouTube: www.youtube.com