PHY 181, Fall, 2006

Week 5
  Main Objectives
bulletBe able to generalize what we have already done with velocity and acceleration to two dimensions.
bulletBe able to solve problems on projectile motion as an example of motion in two dimensions
bulletUnderstand relative velocity (good practice with adding vectors)
bulletBe able to use the new variables which are introduced to describe circular motion
bulletUnderstand why the acceleration vector always points toward the center of the circle for uniform circular motion
bulletBe able to calculate the magnitude of the acceleration for uniform circular motion
Tuesday Continue to practice problem solving using the Dynamics Worksheets. Briefly discuss apparent weight and terminal velocity. View part of film "Frames of Reference."

Outside of class: Read Ch. 6 Sec 1-4. Complete Ch. 6 workbook exercises 2, 5, 7, 9, 10, 11, and 14.  Complete Ch. 5 textbook exercises 15, 16, 29, 46, and 52 to be turned in on Thursday.
Thursday Review the generalization of one-dimensional motion to two-dimensional motion.  Discuss relative velocity.  Practice projectile motion problems as an example of constant acceleration in two-dimensional motion.

Outside of class:  Read Ch. 7 Sec. 1-3.  Complete Ch. 7 workbook exercises 1-4.   All of the Activ Physics exercises in the projectile motion section are very good. I would strongly suggest that you play around with 3.1, 3.2, 3.3,  3.4 (just the first question is enough on this one) and 3.6 to build your conceptual understanding of projectile motion.  Complete Ch.6 homework: 1, 2, 5, 54, 59, 61 and 62 to be turned in on Tuesday.

Friday Continue to practice projectile motion problems.  Begin discussion of motion in a circle as an example of non-constant acceleration in two-dimensions.

Outside of class:  Read Ch. 7 Sec. 4-6.  Complete Ch. 7 workbook exercises: 10, 15, 19, and 21.  Begin Ch. 6 homework: 11, 26a, 29, and 34 to be turned in on Tuesday.