Watch this introduction to Newton's Second Law of Motion. See example problems solved in an easy to understand format. [9:49]

COLLISIONS! A big part of physics is understanding collisions and how they're not all the same. Mass, momentum, and many other things dictate how collisions can be unique. In this video episode of Crash Course Physics, Shini sits down to...

Andrew Janiak (Duke) further introduces Emilie Du Chatelet, a French philosopher, and her contribution to the debate about the principle of sufficient reason. [3:51]

This lesson gives a mathematical relationship for impulse.