# First-Order Principles of Classical Mechanics

MJay82
My Physics teacher yesterday said something that gave me pause. He was talking about the necessity of clearly understanding the first-order principles of the science we study.

Last semester I took Classical Mechanics (part 1 of the Introduction to Calculus-Based Physics at my college) with a teacher who didn't stress first-order principles. He did derive formulas, but then quickly expected us to apply the derivations without giving additional thought to the first-order principles.

Could someone direct me toward a book or link that really gets into the principles behind the formulas for classical mechanics? I really want to build a strong foundation before I continue on in my study of physics.

Thanks for any help!
Michael J