<p>What is the difference between Fundamentals of Physics (Regular) and Fundamentals of Physics (Extended)? The Extended version has over 1300 pages whereas Regular has around 1100, yet the Extended version is about half the price of the Regular on some sites. Thank you.</p>
<p>I have the extended version and I assume you are taking AP Physics C right? I know the extended version covers all AP Physics C material and if the extended version is cheaper, then you should definately get it.</p>
<p>Yes, Physics C.</p>