More Practice Problems for force Unit

Here are some additional problems from the book:
Ch 5  p101-107:  33, 35, 37, 39, 43, 49, 51, 57, 59, 63, 65
Ch6  p123-129:  7, 17, 35, 37, 43, 49, 55, 57, 61

Also Sample problem 6.8 on p 117

Also here are some FRQ from past years that might serve as good practice, though parts of them rely on energy concepts that we haven't learned yet.

They're from

http://apcentral.collegeboard.com/apc/members/exam/exam_information/8039.html

2015 #1
2014 #2  skip part 1
2013 #2
2008 #1
2006 #1 all but last part, and #2  all but last 2 parts
2003  #1 parts a, bii

Finally, here is a practice test with answers that looks good.
https://www.crashwhite.com/apphysics/materials/practicetests/practice_test-3-laws_of_motion-circular_motion.pdf

Unit Three - Forces

Major Topics

• Newton's Laws
• Weight vs. Mass vs. Inertia
• N3L forces vs. Balanced Forces
• Solving problems in 1 and 2 dimensions (inclined planes...)
• Tension and Atwood Machines
• Friction
• Circular Motion and Centripetal Force
• Springs in series and parallel (Hook's Law)
• Velocity dependent forces (air resistance...)

Homework:  Three Large Assignments  Sunday 11/8, Sunday 11/15, and Sunday 11/29
Labs:  No major labs.  2 mini labs (Flying Pigs, Springs)
Test:  Probably Thursday 12/3

Review for test

Here are some questions from your physics book to think about if you want some more practice   The answers are in the back of the book.

p73-80

7, 15, 21, 29, 35, 43, 59, 63, 71, 77, 83

Remember the lab is also due on Monday the 26th.

Oh, and here is a link to a pretty good test (with answers at the end) written by a different teacher somewhere.

https://www.crashwhite.com/apphysics/materials/practicetests/practice_test-2-vectors-2d_motion.pdf

AP Lab Two

AP Lab 2 – Projectile Motion.

Your Task:

In this lab you will be determining the initial velocity of a projectile from its range as a function of its launch angle, and then analyzing the effects of air resistance. Roughly the steps will be as follows.

1. Derive an equation for  R(θ, v)
2. Find  a way to manipulate your axes so that a graph with axes based on θ and R should produce a linear graph, the slope of which will allow you to determine v0.
3. Collect enough good data, that you can determine v0 within a tolerable range.
4. Graph and analyze your data, looking for v0 and a description of the effects of air resistance.

As before copy the questions from the link below to your lab document and answer the questions.

https://docs.google.com/document/d/1JzXZZQAA-xAqU-zDM0WbjdqM6kjIlm_hUAkllqm9K-A/edit?usp=sharing

Unit 2 - Motion in Two Dimensions

Motion in 2D - Chapters 3 and 4

Topics

• Adding Vectors
• Breaking Vectors in Components
• Solving Kinematics Problems in 2D
• Special emphasis on 
• Projectiles
• Circles and 
• Describing motion from a moving frame of Reference

Homework due  9/30, 10/6 and 10/13

Unit Test 10/19

Lab due date TBD

Rheostat Lab

Introduction to vectors in two dimensions

Purpose:  Confirm that the head-to-tail and components methods of adding vectors are equivalent.



After you have completed your data collection and calculations, follow this link to the questions for minilabs.

https://docs.google.com/document/d/1yVSiC_mXguFtIBFf3f9qZG8buX92i011d1_tuNPzDiw/edit?usp=sharing

Paste the questions and answers into your lab document.  Be sure to name this lab in your lab document.

Suggested Review Problems from the Book

These are not required but if you would like more practice problems from the textbook, I recommend these.  The answers are in the back for odd problems.

Chapter 2

p. 28-35

13, 21, 27, 31, 61, 71, 79, 85, 89

Mini Lab: Non uniform acceleration

Follow this link to the questions for minilabs.

https://docs.google.com/document/d/1yVSiC_mXguFtIBFf3f9qZG8buX92i011d1_tuNPzDiw/edit?usp=sharing

Paste the questions and answers into your lab document.

Lab 1-Terminal Velocity

Follow the link below to the questions and report expectations for your first lab report.
It is due Tuesday, 9/8.

You will need to follow the directions in the post below to make a lab report file that you will share with me.


https://docs.google.com/document/d/1K0vaM5-0ac9GmsXQQR-pS_ci_ZDfP_aUd5jk9lOPYIU/edit

3 things to do for this class

If you were not in physics last year you will want to take care of these three things.

Setting up an Online Homework Account:
Please go to this link and start an online homework account. Choose "I need a UT EID" below the red button. In the next windows and pages answer the questions to get an ID number from the University of Texas.  After you submit your information it will send your ID code to your email account. With this code you will will sign in to my class and start the first assignment. You may proceed to sign in now or bring your EID code and password on Wednesday. On Thursday/Friday we will log in as a class, I will start accepting your enrollment and we will start the first assignment.

This is how to sign in:
Return to the link above and log in.
You will then need to select a class based on a unique number. For AP Physics the unique number is 223. Enter the number and then select "look up course info". Scroll down by clicking the arrow on the window that appears through the many other classes designated with that unique number until you find AP Physics (Grant High school 2015 Fall). It will probably be the only one. Select it and then select request enrollment.

I will have to admit you into the class. The next time you log in, after I admit you, you will be able to use the "select course" and "select assignment" windows to start the Kinematics homework.

Creating a Google Document for submitting lab reports:
Students will submit their lab reports to me via google docs.

Please make a google account, and make a single google doc and share it with me.  All of your labs will go one this single document.  Please give me the ability to edit it so that I can add comments and insert my scoring rubrics.

Please use the naming format - lastname.firstname.APphysicsperiod____

My address for sharing is emedley@pps.net.

Installing LoggerPro on your home computer:
As a Grant High School student you have the right to install Logger Pro on your home computer.  The following installation links will require a password to decompress.  You will need to get that password from me.


Logger Pro 3.9 with sample movies (Windows)
Link: http://www.vernier.com/d/gvnsz
Password: 

Logger Pro 3.9 with sample movies (Mac OS X)
Link: http://www.vernier.com/d/lps7w
Password: 

Ask me for the password.

Unit 1

Unit 1: Kinematics in 1 Dimension – the basics

Assignments
Letter to Teacher Tues, 9/1
Lab 1 report Tuesday, 9/8
Quest homework assignment Tues 9/8, Wed 9/16

Unit Test : Tues, 9/22

Welcome to AP Physics

The 2015-2016 has started. Welcome to AP Physics.

Here's some course information:

Grades: Approximately 50% Tests, 30% Labs, 20% homework

Tests: About twice a quarter, with semester finals also. Almost always items from old AP tests, which I’ll grade by their scoring system. This will cause me to adjust the overall grading scale. See below.

Labs: Although we’ll have weekly hands-on lab assignments, I’ll only have you write up formal lab reports about twice a quarter. (The first one will be due Sept. 8.) Many small lab activities will require answering 3 short reflection questions.  Late labs are penalized at 10% a week.

Homework: Most homework will be submitted online through the web site https://quest.cns.utexas.edu/   It will be graded for accuracy, but on a sliding scale because I recognize that homework is practice and created to find mistakes. Students who have difficulty getting internet access should talk with me. Accommodations will be found. No late homework accepted except for excused absences.

Grading Scale: 100-85 A, 85-70 B, 70-55 C, 55-40 D, 40

Supplies:
Textbook
Notebook, or section of a notebook
Calculator


Here is the AP Physics C page dedicated to old tests.

http://apcentral.collegeboard.com/apc/members/exam/exam_information/8039.html

Periodic Motion and Gravity Test

Here are some questions from the text book related to the material on next Thursday's test.

Ch 14. p342
15, 29, 35, 43, 55, 75, 85

Ch 16, p. 391
13, 21, 25, 35, 39, 45, 49, 59, 77, 79

Remember also that there are FRQ at the AP site and multiple choice questions at
http://www.varsitytutors.com/ap_physics_c_mechanics-practice-tests

Simple Harmonic Motion Lab

After doing the lab in class today answer the three standard minilab questions in your lab document.

Our purpose in doing the lab was to use our equation for the period of springs to determine if our arrangement of springs was parallel or series.


Here are the three minilab reflection questions.

Questions

1. Describe the main physics related concept(s) you learned or practiced in the lab.
2. How did the lab demonstrate or support these concepts?
3. What else did you learn in the activity?

Rotations Test Review

Here are some problems from the textbook if you're looking for more practice problems before Thursday's test.

Ch 11 p 260
23, 41, 43, 51, 73, 83, 87

Ch 12
9, 15, 17, 29, 45, 57, 65, 69

http://apcentral.collegeboard.com/apc/members/exam/exam_information/8039.html

At the AP physics site you can find some good Free Response questions from past years.  I recommend 2013 #3, 2012 #3, 2010 #2, and 2008 #2.

Help with Rotations Hmwk

We didn't have time in class to answer all of period Four's questions about the homework.  Here are some general comments and hints about the questions we didn't get to.

14. Use the pivot point as your point of reference for determining torques.  Remember that the Torque due to gravity will act at the center of mass or 0.5length.

19.  Although I suggested at one point in class that this problem might be easier if you use conservation of energy, I think it's actually easier if you use the acceleration value you determined in Q17and 18.  The relevant distance is half the original separation distance; that is where they'll meet. v2=vo2 + 2ax.  (#20 probably still is easier to solve with conservation of energy, but you could do it the same way you do 19.)

22.  Since I is the sum of the contributions by all the parts, you can add the I for a rod and the I for a mass (MR^2) to get the total I.

23.  Xcm = is similar but different to I.  This question is a review question of an equation that we used back in our momentum unit.

24.  The question is asking us to solve for a fraction:  Krot/K total.  K total = 1/2mv^2 + 1/2 Iw^2.  Since it's a true roll wr=v.  Convert w to v and then substitute into the fraction.  v should cancel out.  The other values are givens.

Rotations Lab Guidelines.

Link to Lab Report Guidelines.

Put the lab report in your shared lab report document.  This is the big one (200pts.)  Do a good job and get it in on time.

Torque Lab

Here is the folder for the shared wheel videos.

https://drive.google.com/folderview?id=0B54jRZBDezIHfnpqcXI3ZDBMSUduZHhCdFhZakQybTRWeWw1UmtVRVFKdTI0SXVHdFFYdHc&usp=sharing

Book Questions from the Momentum chapters

These look like good candidates if you're looking for more questions about momentum, impulse, center of mass and conservation of momentum.

Ch. 9   15, 21, 39, 47
Ch. 10  19, 27, 47, 53, 55, 67, 71

Reviewing for the First Semester Final

Here are some questions from the end of Chapters 7 and 8 about Energy, Work and Power

Ch7.  15, 23, 33, 37, 51
Ch8.  23, 35, 39, 49, 55, 69, 89

Here is a link to the AP Physics C Course Description.  On pages 16-25 they list the learning objectives in careful detail - a giant list of what we should learn in this class, and the only real list of what concepts and problems might be on the test.  We have covered sections A- D at this point.

http://media.collegeboard.com/digitalServices/pdf/ap/ap-physics-c-course-description.pdf

Here is a link to a site with numerous practice tests, each 2-20 MC questions about topics of a particular type.  After you do the questions they will show you solutions.  It will ask you many times to sign up for their tutoring services, but it never seems to require you to do it.

http://www.varsitytutors.com/ap_physics_c_mechanics-practice-tests

As always the link to the practice AP FR questions remains a good source for practice with answers, and there is the new set of homework questions.



You can also use UT quest to make a customized review set of questions, focusing on all of the homework questions that you missed the first time around.  Follow these steps  (copied from their help menu)

• Customized Review 
• To help you review for an upcoming test, use the Custom Review option to create customized reviews that focus on your weakest areas. Choose Grade Summary from the left menu, then the Grades by Subject Area link to see the Custom Review option.  

The Bungee Jump

From a designated height, and using a given minifigure and spring, determine how much string must be added in order that the bungee jumper gets as close to the ground as possible.


Take a photo of your calculations and attach them to your answers to the three minilab questions.  Put them in your lab document.

Minilab Questions Link
https://docs.google.com/document/d/1yVSiC_mXguFtIBFf3f9qZG8buX92i011d1_tuNPzDiw/edit