Binary Stars and Air Friction Videos

Hey, juniors - here are two links for learning how to do binary orbits and air friction (the hockey puck example, and a sky diver example). For the air friction, this could be review of our derivations in class. For binary orbits, check out the video and see what you can do with the AP problem over the weekend. Feel free to do this with a friend or study group, and help each other through it.