Interactions

HW DUE:** WebAssign was due.
 * TUE 10/09
 * DO NOW:** Review Book p. 28 #7, 8, 9, 10
 * IN CLASS:**
 * Review Book p. 28 #13 on WB
 * From edmunds.com: 2005 Porsche Boxster S 60 mph to 0 in 105 ft (27 m/s to 0 in 32 m) Find accel and time.
 * Handed back Lab 1.


 * WED 10/10**
 * HW DUE:** Lab 2: Ramp Lab
 * DO NOW:** Define "Interaction"
 * IN CLASS:**
 * 1: Lab Practical: Falling Coffee Filters -- constant v or acceleration? How do you know?
 * 1: Go over Fri quizzes.
 * Interaction Diagrams
 * Motion with and without net interaction.
 * Hovercraft and hoverpucks.



MON 10/15 HW DUE:** None
 * DO NOW:** None
 * IN CLASS:**
 * Wrap up 4 fundamental interactions
 * Interactions and Motion
 * Balanced vs. Unbalanced Interactions
 * 2 student cart demos: bowling ball catch, toss, 2 people ball toss, 1 vs. 1 identical student, 1 vs. 2 identical student.
 * When did motion change? When did it stay the same? Relation to interactions? Why different effects?

HW DUE:** None
 * TUE 10/16
 * DO NOW:** None
 * IN CLASS:**
 * 1 Interactions and Reciprocity
 * 1 Strength of Interaction (Force in newtons) vs. Effect of Interaction (change in motion)
 * 1 Dueling Force Probes Demo
 * 2 Graviational Force Applet Activity
 * 2 Worksheet problems: Vary M1, M2, d, what's F? (Back of Gravitional Model Sheet)

HW DUE:** WebAssign due last night, Falling Filter Lab due by 2:30
 * WED 10/17
 * DO NOW:** Review Book p. (69, 70, 71)
 * IN CLASS:**
 * Gravitational Model Notes
 * Discussion of form of general model
 * Calculate G from activity data
 * Plot activity data to determine shape for force vs. distance graph.
 * WB: Calculate Fg for 2 books 1 m apart. (1E-10 N)
 * WB: Calculate Fg for 1 book and earth. (12 N). Compare to previous. Check by hanging book from spring scale!
 * Review Book q'ns on universal gravitation.

HW DUE:** None
 * THU 10/18
 * DO NOW:** Review Book p. 47 (114,115,116) -- Weight!
 * IN CLASS:**
 * 1 Define WEIGHT: "Gravitational interaction btwn planet and object"
 * 1 Determine the "shortcut" for weight on the surface of the earth
 * 1 Graph of weight vs. mass ... slope = 9.81 N/kg
 * 1 Go over last week's quizzes
 * 2 Electrical charge, units for charge
 * 2 elementary charge units and coulombs
 * 2 Electrical Interaction activity (GIZMO)

HW DUE:** Study for Quiz
 * FRI 10/19
 * DO NONE:** Clear desk for quiz
 * IN CLASS**:
 * Quizzes: Acceleration 3, Interaction 1
 * Electrical Interaction Model Notes
 * Discussion of form of general model
 * Calculate //k// from activity data
 * Plot activity data to determine shape for force vs. distance graph.

HW DUE:** Start WA 07: Gravitational/Electrical Interactions IN CLASS:**
 * MON 10/22
 * DO NOW:
 * 1: WB All 3 worksheet problems on Electrical Interactions (ex: Calc Fg and Fe for two protons in the nucleus (d = 1E-15m). Compare. Evidence for strong nuclear interaction, #3 is a warm-up for the lab next period.)
 * 2: LAB PRACTICAL: Charge on a Tape: Determine the magnitude of the charge on a piece of scotch tape. Works well with repulsive tapes, each student holds a tape and a third measures the distance. Students should repeat distance measurements.

HW DUE: DO NOW: IN CLASS:**
 * TUE 10/23
 * Damage Control: Kids need to accelerate ride-on carts with bathroom scales, keeping the reading on the scale constant (20 lbs). Two carts in the hallway (helmets!). Kids trade places, important kinestetic activity. In class, two opposing magnets on one lab cart. BIG IDEA: The only way to predict the motion of an object is to determine if the interactions are balanced or unbalanced.

HW DUE: DO NOW: IN CLASS:**
 * WED 10/24
 * 1 Recap Balanced/Unbalanced and motion. Do ride-on cart demo with students who were absent. Fill out worksheet.
 * 1 Go over quizzes ... quiz folders created
 * 2 Vector Treasure hunt

HW DUE: DO NOW: IN CLASS:**
 * THU 10/25
 * Discuss treasure hunt, vector addition graphical method, head-to-tail, properties of vectors

HW DUE: DO NOW: IN CLASS:**
 * FRI 10/25
 * 1 QUIZ DAY!
 * 2 Vector PowerPoint Activity

HW DUE: DO NOW: IN CLASS:**
 * MON 10/29
 * Finish power point activity (next year trim # of slides!, ones at the end don't matter much)

HW DUE:** Vectors in Manhattan worksheet, Charge on a Tape Lab.
 * TUES 10/30
 * DO NOW:** #3 from worksheet on whiteboard
 * IN CLASS:**
 * 1: Discuss components as extension of Manhattan worksheet. Addition of vector components is same as addition of original vectors.
 * 1: Use of coordinate pair notation  for vectors and equivalent magnitude w/ direction notation.
 * 2: Force Vector equilibrium lab.