What makes Newton's laws work? Here's the simple trick. - Space.com

Lagrange found that the difference between an object's kinetic energy and potential energy unlocked something deeply profound about the universe.

Paul M. Sutter is an astrophysicist at SUNY Stony Brook and the Flatiron Institute, host of "Ask a Spaceman"and "Space Radio," and author of "How to Die in Space ." We all learned Newton's laws i… [+5217 chars]

full article...