Forces

a. MIT has open courseware for many courses they teach. Two of Professor Walter Lewin's lectures are here: 1. : Weight, Perceived Gravity, and Weightlessnes [|Go to this video]

2: Frictional Forces [|Go to this video]

3. Here is an introductory movie on contact forces between objects showing and explaining some **real problems and solutions from the AP C** **exam.** Its the same teacher as in the intro video (Lecture 2.1). Lecture 2.1: https://www.youtube.com/watch?feature=player_embedded&v=_Bomoft-ngg Lecture 2.2: https://www.youtube.com/watch?v=micJwiOKcVo&feature=channel&list=UL Lecture 2.3: https://www.youtube.com/watch?v=a3MSHLs7WX0&feature=relmfu

4. Before you are ready for the next step I will teach you in September about the "unit vectors" called i, j and k. It also shows the type of trigonometry and Physics I'd expect you to be comfortable with during the first 2 weeks (with some help from me ) If you want a sneak preview of that try the Khan Acadamy at:http://www.khanacademy.org/science/physics/v/unit-vector-notation and part 2 at http://www.khanacademy.org/science/physics/v/unit-vector-notation--part-2

5. Here is a movie on some other applications of Newton's laws involving inclined planes and pulleys using unit vector notation. Its from an animated online from the Open University series that covers the whole AP C course. This one involves trig and i,j,k unit vectors. []

Well that's a lot. If you still want to see more. Check out what we will be doing in Electricity and Magnetism C.

^^^^^^^^^^^^^^^^^^^^^^^^^ FUTURE MATERIALS for later in the year ^^^^^^^^^^^^^^^^^^^^^^^^^^^

 * PowerPoint Presentations:**



Drag (retarding) force: http://www.youtube.com/watch?v=U-3qJN6ntoU
 * Video Instruction:**