# HP Cycle 9

## 10/26 - 10/29

T 10/26

W 10/27

Th 10/28

F 10/29

### π’ 6: T 10/26, π΅ 8: T 10/26 - analyzing 2 experiments

Today, we'll take the next and final step in your lab analysis and talk about how to use the findings from your final lab graphs to find the relationship between force, mass, and motion. To do this, we'll have to learn how to combine two equations together to form one big equations that relates all three of the variables. We'll also discuss what needs to be in the final lab report. If there is time, you'll start working on that report.

Homework: Analysis is due to βοΈ Google Classroom on Tuesday, October 26th at 10pm.

Tonight, it is very important to type up what we talked about in class before you forget. If you have any questions, ask me next class or send me an email at barbara.fortunato@wwprsd.org. Make sure you use Equation Editor or an equivalent program to type your equations in Google Docs. Handwritten equations in your write-up are not acceptable. "^" and "_" are also not acceptable - you must learn how to use your word processing program to accommodate subscript and superscript.

### π© 6: Th 10/28, π¦ 8: W 10/27 - free body diagrams

Today, we'll first learn about how to draw free body diagrams in order to represent the external forces on an object/system. First read the PowerPoint below. Then watch the video below. Then practice on Free Body Diagrams Worksheet.

Presentation: Free Body Diagrams Powerpoint

Handout: Free Body Diagrams Worksheet

Homework: Draw free body diagrams for the objects on Free Body Diagrams Worksheet. This worksheet will be collected in class on Monday, November 1st.

Video: This video was made for students in AT Physics, so there are some advanced concepts like knowing the direction of acceleration and also picking the "right" sign convention. There are also things about knowing if the forces equal each other that you can ignore for now. Just focus on how to draw the arrows and label them appropriately.

### π 6: F 10/29, π 8: Th 10/28 - β Positive Physics free body diagrams

Today, we'll work on the following sections β Positive Physics unit 5: introductions to forces:

• free-body diagram drawing 1

• free-body diagram drawing 2

• free-body diagram analysis 1

• free-body diagram analysis 2

Note: The following abbreviations are used in β Positive Physics:

• W - weight, aka force of gravity

• N - normal force

• Th - thrust

• D - drag, aka force of air friction

• A - applied force

• T - tension

Homework: Finish β Positive Physics unit 5 problems by Friday at 10pm. Only completion score will count, so you can continue to try if you get it wrong the first time. Try to finish these problems early in case you run into technical difficulty. No late credit.

βNewton's Second Law lab quiz next class - Monday, November 1st.