Prior to going over this in class, try reading these three pages from the physics tutorial website or reading chapter 4 from the textbook and answering the three on line homework questions on Quest (due Sun. night)
http://www.physicsclassroom.com/Class/vectors/U3L1a.cfm
http://www.physicsclassroom.com/Class/vectors/U3L1b.cfm
http://www.physicsclassroom.com/Class/vectors/U3L1c.cfm
