Friday, December 17, 2010

Today we did the first part of Circular Motion.

The slides are available here: https://sites.google.com/site/dandradeedusite/Home/physics-class-files

Your homework is Packet #6 - Circular Motion, Problems #1 - 12

Physics assignment

After reviewing your portfolios today, you will go to the computers in your normal groups and go to
"Multimedia Science School" in the Novell screen.

Then Physics - Fields - Motion in a Circle - Lesson - Circular Motion

We will be starting this unit on Friday, so this is a chance for you to get started on learning the material.

As you go through the lesson, note the new things you have learned in your notebook, along with any new equations for circular motion.

Test coming up! Time to study!

Test next week!


Period 2, 7 - Tuesday
Period 3, 5, 6 - Wednesday

You will be provided with a list of the equations.


You should be reviewing Packets 3 (Forces), 4 (Momentum), and 5 (Work and Energy)
Try each of the problems again without looking at the solutions. Then check your answers and use the solutions to help you if you didn't get it correct.


Some sites to go to for review:
Forces: http://www.physicsclassroom.com/Class/newtlaws/
Momentum: http://www.physicsclassroom.com/Class/momentum/
Work and Energy: http://www.physicsclassroom.com/Class/energy/


Come in to class on Monday with any questions you may have on these topics. I will answer questions, but I will not just do a "review".

Tips for studying for exams

http://publicrelationsmatters.com/2010/11/30/26-tips-for-studying-for-final-exams/

Student Access to Power School

Students now have access to PowerSchool. You can check your grades and attendance very easily. If your teacher uses the Gradebook (like I do) you can see individual grades and even check if you are missing any work.

Login is done just like you are logging into a school computer.

Here is the link:
https://powerschool.bridgeportedu.net/public/home.html

Make sure you also check to see if there are any "CUTS" that should be "EAB" (excused absence) and get a note from your parent or have your parent call the school.

Algebra Help

Since I know many of you struggle with algebra (not necessarily your fault either!) I thought I'd post some resources to help you.

http://www.algebrahelp.com/ is a great site that has mini lessons for you to learn more about different parts of algebra. It is broken down by topic.

http://bridgeportmath.org/ - site for the math department for Bridgeport. It has some great information and resources for you to review and reinforce math concepts.

http://www.physicsphenomena.com/PhysicsMathReview.htm - Physics math review - great resource for help with math in physics.

http://www.physicsclassroom.com/ - has some problem solving help in each section that will help you with some of the algebra.


And of course you can always ask me for help. Do not hesitate to come after school or email me for help. Do not wait until it is too late.

Momentum Slides posted

The lecture notes for Momentum have been posted here:
https://sites.google.com/site/dandradeedusite/Home/physics-class-files


Reminder - all classes have the following homework tonight: Packet #4, Problems 7-14

Free Online Scientific Calculator Available

I have included a free, online scientific calculator on the main class site (www.physicsmedic.org).

You can access it here: https://sites.google.com/site/dandradeedusite/Home/scientific-calculator

This is a great resource if you don't have your own calculator but can get to a computer.

Protocol for Solving Physics Problems

The protocol is an appraoch to problem solving for Physics. 

 

10 steps

 

1. read the problem

 

2. create a meanful diagram

 

3. determine the variables

 

4. assign values to variables (what you are given and what you know, and what you are looking for)

 

6. choose equation

 

7. do your algebra (to solve for the variable you are looking for)

 

8. substitue values into equation

 

9. complete the math

 

10 check sig figs and box or circle answer

Work Energy Lab - LAB REPORTs

Due Dates for Work Energy Lab LAB REPORTS:

Periods 2, 3, 6
Wednesday, November 24th. If your class doesn't meet that day, you must turn the lab report in to me anyway.
You can bring it to me in the room, put it in my mailbox in the main office, or email it to me. dandrade@bridgeportedu.net

Periods 5, 7

Monday, November 29th.

Here is the link to the instructions if you lose yours.

http://mrandradesphysics.blogspot.com/2010/11/work-and-energy-lab.html

Roller Coaster Physics Online Project

Periods 2, 3, 6, :


Roller Coaster Physics Online Project

1. Go to http://library.thinkquest.org/2745/data/ke.htm and read about the energy conversion in a roller coaster.

2. Go to http://www.learner.org/interactives/parkphysics/coaster.html and read the first page. Then click on "How did coasters come to be? Read more about their history" and read about roller coaster history. Then click on "Back to Roller Coaster" which will bring you back to the start. Click on "Design a Roller Coaster" and follow the instructions. Make sure you click on the "safety inspection" after you are done with the design. Try out more than one design also.

3. Go to http://www.funderstanding.com/coaster and use the simulation to try out different roller coaster designs. Change the height of the initial hill, loop, and second hill. Start a new track and design your own layout. Watch what happens depending on what you do with the design.

4. Go to http://tlc.howstuffworks.com/family/roller-coaster.htm and read all about Roller Coasters.

5. If you have time, go to http://www.perthnow.com.au/fun-games/rollercoaster-creator/story-fn4ej4lr-1111117325689 and try out the roller coaster game. See how well you do.

Think before you post online!

Think before you post anything on Facebook, Myspace, Twitter, a blog, or even email or text message. That information could end up being seen by anyone.

Work and Energy LAB

For the Work and Energy LAB (Discovery Lab - Exploring Work and Energy) that we are doing this week, you must write a full lab report.

Each student must write their own lab report. Do not copy from your partners. Any labs that appear copied will share the full grade (in other words, if 3 people copy from each other, the highest grade any of them can get is a 33/100).

Here are the lab report guidelines (which were also handed out during class)

Remember: Labs are performed in groups for data collection purposes only. Your lab report should NOT be the result of shared writing, copying, or cooperative effort. This includes your calculations. You must do this on your own. Remember to cite any references you use and do not copy from the lab sheets into your lab report. GRAPHS MUST be done on your own—make your own title, labels, etc.  If the identical graph is turned in for multiple people, none of the individuals will receive credit for the graph portion of the analysis!

1. TITLE and DATE, NAME, CLASS PERIOD

2. INTRODUCTION-- The introduction must clearly state the objectives of the lab. It should also include background information on the topic that the lab is about.

3. PROCEDURE--First list ALL lab equipment used in performing the lab. Draw a sketch of the lab setup and label all equipment used. Then list numerically the steps used in completing the gathering of the data required for the lab. Be sure to mention how many trials were taken in the lab.

4. DATA-- Clearly list and label all raw data taken in the lab. Use a table or some other such method for presenting measurements. Make sure units are clearly labeled for all measurements.

5. CALCULATIONS-- Briefly explain what quantity is being calculated and why. Then show all formulas needed, including algebraic manipulations of standard equations where necessary. Then show the calculations for each trial. In this section also include all graphs and charts when required. This section will also contain the error calculation when required.

6. ANALYSIS-- Here, in a single section, ALL questions posed throughout the lab should be answered in order. Answer questions in full sentences and ALWAYS give reasons for Yes or No answers. If the question posed requires a calculated answer, be sure to show all standard equations along with working equations, inserted values and final answer. Show your work. This section will also contain an error analysis.

7. CONCLUSION-- In one paragraph each, explain which of the objectives were met in this lab and why, and which objectives failed to be met and why. In another paragraph describe how the lab could be improved by modifying the procedure or analysis.

8. APPENDIX—attach any lab sheets or notes used during the lab.

Hand written labs and graphs are allowed, but not recommended. If hand written, they must be neat and legible and in ink. Students should use word processing software (like Microsoft Word or Google Docs) to create the lab report. Software, such as Excel or Google Docs, should also be used to create graphs.  If needed the graphs can be hand drawn.

RESOURCES:

Physics topic reference: http://www.physicsclassroom.com/Class/index.cfm

This is a great site to help students use Excel in Physics: http://phoenix.phys.clemson.edu/tutorials/excel/

You can find more software tutorials here: http://it.usu.edu/fact/htm/software-tutorials

For more information on writing lab reports:

http://chemistry.about.com/od/chemistrylabexperiments/a/labreports.htm

http://grahamscience.googlepages.com/writingscientificlabreports

http://shs.westport.k12.ct.us/mjvl/science/labformat.htm

Monday, November 15th

Today we are continuing Work and Energy.

So far, you have already learned and are able to:

§ calculate work done by a force, kinetic energy and gravitational potential energy;

§ explain that work done against friction is dissipated to the surroundings;

§ describe energy conversions and the conservation of energy.

Objectives:

Having completed this lesson, students should be able to:

- calculate the work done by a constant force in situations including those where the force is not in the same direction as the displacement;

- explain how the work done by a force is related to energy conversions and energy conservation;

- apply the principle of conservation of energy to simple examples (e.g. the motion of a load on a slope and the motion of a roller coaster car);

- use the equation for kinetic energy: KE = ½mv²;

- use the equation for gravitational potential energy changes: PE­­_g = mgΔh.

Method: you will go to the computers as a group.

Log in and go to Multimedia Science School.

Select the following:

Physics

Mechanics

Work and Energy

Lesson

Energy Transformations

As you go through the lesson, make sure you pay attention to each part of the lesson and take notes. Write down any questions (and answers) and information from each page in your notes that you think is helpful for future reference. I will be checking your notes at the end of the lesson. Do not write everything down.

Take notes of important and helpful information.

Try each simulation multiple times with different variables so you can truly see what is happening.

As you work through the lessons, perform the calculations for yourselves before selecting the final row in the ‘Calculate work’ table, to check your answers.

Schedule Update

Today, Wednesday 11/10

Period 2 - continued Work, Power, Energy. Homework is Packet 5, #5-10

Period 3 - we went over the homework (Packet 5, #1-4) and continued Work, Power, Energy. Homework is Packet 5, #5-10

Period 6 - we went over the homework (Packet 5, #1-4) and continued Work, Power, Energy. Homework is Packet 5, #5-10

Slides from lecture are now posted here: https://sites.google.com/site/dandradeedusite/Home/physics-class-files

Reminder: for extra help on this topic, go here: http://www.physicsclassroom.com/Class/energy/

Remember, no school on Thursday for Veterans' Day. http://en.wikipedia.org/wiki/Veterans_Day

Friday, 11/12

Period 2 - go over homework (Packet 5, #5-10), continue Work, Power, Energy lesson

Period 3 - go over homework (Packet 5, #5-10), continue Work, Power, Energy lesson

Period 6 - go over homework (Packet 5, #5-10), continue Work, Power, Energy lesson

Period 7 - go over homework (Packet 5, #5-10), continue Work, Power, Energy lesson

Schedule Update

Today, Monday, November 8th

Period 2 - part 1 of Work, Power, Energy lecture and then finished lab. Homework is Packet #5 , Problems 1-4

Period 3 - part 1 of Work, Power, Energy lecture. Homework is Packet #5 , Problems 1-4

Period 6 - part 1 of Work, Power, Energy lecture. Homework is Packet #5 , Problems 1-4

Period 7 - part 1 of Work, Power, Energy lecture. Homework is Packet #5 , Problems 1-4

Tuesday, November 9th

Period 2 - finish lab, go over homework from yesterday

Period 5 - part 1 of Work, Power, Energy lecture. Homework is Packet #5 , Problems 1-4

(finish LAB)

Period 7 - go over homework from yesterday, continue Work, Power, Energy unit.

Slides (part 1) are available here: https://sites.google.com/site/dandradeedusite/Home/physics-class-files

Extra Help on this topic: http://www.physicsclassroom.com/Class/energy/

Update

All physics classes are working on the Forces-Friction lab.

Thursday, November 4th:

Period 3 - finish the Forces-Friction LAB
Period 6 - Forces-Friction LAB


Friday, November 5th:
(we will NOT have the Quiz today due to many students being absent for The Challenge).

We will finish up Forces by discussing the lab and then seeing a short video as a review.

On Monday, November 8th we will start the next unit, which is Momentum. Momentum is closely related to Inertia. For some advance information on Momentum, check out this website:
http://www.physicsclassroom.com/Class/momentum/

Mr. A

Update

All of the lecture notes for Forces are now posted. Part 3 is more on forces and another example and Part 4 is about pressure. You can find them here: https://sites.google.com/site/dandradeedusite/Home/physics-class-files

Today (Wednesday, Oct 27th)
Period 2 - finished the computer assignment
Period 3 - those that were in class finished the computer assignment.
Those students that went to the Fairfield University presentation need to do the following as makeup:
Go to this site, http://glencoe.mcgraw-hill.com/sites/0078807220/student_view0/chapter4/chapter_test_practice.html
complete the "test" and submit it to me at this email address: dandrade@bridgeportedu.net
Each student must submit their own to me.

Period 6 - finished all of the forces lecture. Your homework is Packet 3, #12-21 and is due Friday.


Tomorrow (Thursday, Oct 28th)
Period 3 - we will finish the Forces lecture
Period 5 - we will go over your homework (#7-11 in packet 3) and then finish the Forces lecture
Period 7 - we will go over your homework (#7-11 in packet 3) and then finish the Forces lecture

Lecture Notes Posted - Forces part two

Lecture notes for part two of the Forces lecture have been posted. 


Go here:https://sites.google.com/site/dandradeedusite/Home/physics-class-files
File name: Physics - Forces and Newton's Laws - lecture notes part 2.pdf


After this part of the lecture, your homework is Packet 3, problems 7-11

Lecture notes posted

I just posted the lecture notes for the 1st part of the Forces and Newton's laws unit.
Period 5 and 7 did that today. Period 2 did it the other day and Periods 3 and 6 will see it tomorrow (Friday).

You can find it here: https://sites.google.com/site/dandradeedusite/Home/physics-class-files

The file is "Physics - Forces and Newton's Laws - part 1.pdf"

Schedule Update

Today:

Period 5 and 7 started Forces. Your homework is Packet #3, #1-6, due next class.

Friday:
Period 2 will finish the 1st part of Forces and have homework (Packet 3, #1-6)
Period 3 and 6 will start Forces.
Period 7 - go over the homework.

Reminders

Some reminders for you.

Do Now (everyday as you enter class)

Put away cell phones and MP3 players.

Take out any assignments or homework.

Reflect on last class and prepare any questions for me.

Mentally prepare for class – get ready to learn.

Homework (this you do everyday)

Reflect on today’s class and what you learned.

How did you do in class today?

Could you do something better next class?

Do you have any questions on what we did in class?

These are the things that students should do everyday, for every class they are in.

Physics Quest

Today you will do a Physics Web Quest to find information about Newton's Laws.

NEWTON’S LAWS OF MOTION AND FORCES

INTRODUCTION

Problems in physics will seldom look the same. Instead of solving problems by copying or by reproducing a previously solved problem, you should utilize your conceptual understanding of Newton's laws to work towards solutions to problems.

In this investigation you will gain a deeper understanding of the concept of net force that will help you solve the various problems assigned.

As you read each section on the websites, make sure you go through the practice problems and each demonstration and simulation.

TASK

By the end of this PhysicsQuest you will gain an understanding of weight, mass and net force (vector sum of all the forces) and Newton’s Three Laws of Motion.

PROCESS AND RESOURCES

You will be given a series of questions and various links to Internet sites that will help you answer the questions.

As you read each section on the websites, make sure you go through the practice problems and each demonstration and simulation

NEWTON’S FIRST LAW

What is Newton’s First Law?

What is meant by Inertia?

FORCES

A variety of force types were placed into two broad category headings on the basis of whether

the force resulted from the contact or non-contact of the two interacting objects.

Define and give an example of each contact forces using your own words. (Frictional Force, Tensional Force, Normal Force, Air Resistance Force, Applied Force and Spring Force).

NEWTON'S SECOND LAW

What is Newton’s Second Law?

What is the formula for Newton’s Second Law?

Finding Acceleration

The process of determining the acceleration of an object demands that the mass and the net force are known.

Which equation should be used to solve for acceleration?

NEWTON'S SECOND LAW

Find individual forces.

Write the three major equations used in this section:

The equation for net force,

The equation for gravitational force and

The equation for frictional force.

FREE FALL AND AIR RESISTANCE

The objective of this section is to understand how air resistance works.

Read this section and using your own words answer these questions:

What are the two factors (among others) that affect air resistance?

Why do objects which encounter air resistance ultimately reach a terminal velocity?

Why do more massive objects fall faster than less massive objects?

NEWTON’S THREE LAWS from NASA

When you get to the bottom of the page, click the blue "NEXT" arrow and go to the next page. (follow Newton's laws of motion. There are four pages.)

Make sure you understand all three of Newton's laws. During the next class, we will be applying them and using them to solve problems. I may even ask a group to come up front and discuss one of the laws in front of the class, so be prepared!

Write up anything you learned from the NASA site that you didn’t learn from the earlier sites along with the answers to all the questions above.

You will turn in your answers as a group. You can do the work in Microsoft Word and submit it

to me electronically through this site. Make sure all group member names are on the paper.

(submit it using the tool on the right side of the site:

Good luck and have fun!

Next class we will go over what you have learned and then apply it to different problems and situations.

Projectile Motion Review

Tuesday, September 28th

Make sure you finish the review on Multimedia Science School (see post below). If you finish that, then go to

http://www.physicsclassroom.com/Class/vectors/u3l2a.cfm and go through the whole section. When you reach the bottom of the page, click on "Next Section". There are six (6) sections for Projectile Motion.

Remember, the quiz is on homework Packets 1 and 2 - one and two dimensional motion.

Quiz dates:
Period 2 - Wed, 9/29
Period 3 - Wed, 9/29
Period 5 - Thu, 9/30
Period 6 - Fri, 10/1
Period 7 - Thu, 9/30

Email me if you have any questions.

Also - today, Tuesday, (and every Tuesday after) is CPEP - the pre-engineering program. Interested students should report to room C209 after school today.

Projectile Motion Review

Due to the inclement weather, we will not be doing the balloon lab before the quiz. (Yes, your quizzes are still as scheduled - see post below for reminders).


Once we go over the review problems, you will get into your groups and go to the computers and log in and complete the following activity as a great review on projectile motion.


Novell Login Screen:

Select Multimedia Science School - Physics - Mechanics - Kinematics - Lesson - Projectile Motion


Go through the entire lesson. 

If you finish before the end of class, then you can also go to the following web site for more review:

http://www.physicsclassroom.com/Class/vectors/u3l2a.cfm

Schedule Update

Today, Friday, September 24th we did:
Period 2 - finished the first projectile motion lab and started the review problems. Finish the lab packet and the review problems for homework.

Period 3 - finished the first projectile motion lab and started the review problems. Finish the lab packet and the review problems for homework.

Period 5 - went over the homework (packet 2, #10-16) and started first projectile motion lab. Do the review problems for homework.

Period 6 - finished the first projectile motion lab and started the review problems. Finish the lab packet and the review problems for homework.

Period 7 - went over the homework (packet 2, #10-16) and started first projectile motion lab. Do the review problems for homework.

Monday, September 27th we will:
Period 2 - go over review problems

Period 3 - go over review problems

Period 6 - go over review problems

Period 7 - finish LAB 1, go over review problems

QUIZ coming up. The quiz will be on Packets 1 and 2 (everything so far). You will be provided with the equations but you must understand how to use them and the physics concepts behind them.

Quiz Schedule:
Period 2 - Wed, 9/29
Period 3 - Wed, 9/29
Period 5 - Thu, 9/30
Period 6 - Fri, 10/1
Period 7 - Thu, 9/30

Good sites to use to review for quiz:
http://www.physicsclassroom.com/Class/1DKin/
and
http://www.physicsclassroom.com/Class/vectors/

Great review site for lots of topics

The Khan Academy is a not-for-profit with the mission of providing a world-class education to anyone, anywhere.


They have tons of videos with lectures on reviews of different topics, including math, science, and more.


Check it out and definitely check out the section on Physics.


http://www.khanacademy.org


http://www.khanacademy.org/?video=introduction-to-motion#Physics

Update on homework

There was an error on the second review problem. Part C should say "find y0"
See below for the fix:

Schedule Update

Thursday, 9/23/10

Period 3 - completed the first projectile motion lab

Period 6 - went over the homework (Packet 2 #10-16)


Friday, 9/24/10

Period 2 - finish 1st projectile motion lab, review problems

Period 3 - finish 1st projectile motion lab, review problems

Period 5 - go over hmwk (Packet 2 #10-16), do 1st projectile motion lab

Period 6 - finish 1st projectile motion lab, review problems

Period 7 - go over hmwk (Packet 2 #10-16), start 1st projectile motion lab


Reminder: There will be a quiz on Packets 1 and 2 after we finish the labs for this section. I'll give you exact dates as they get closer.

Review for Projectile Motion:

http://www.physicsclassroom.com/Class/vectors/u3l2a.cfm

A little help and clarification for inside Projectile Motion lab

Here is a little diagram that may help you with the inside Projectile Motion lab.

Schedule Update

Today:
Period 2 - finished 2D motion, Projectile Motion - homework is Packet 2, #10-16
Period 3 - went over the homework that was due today (Packet 2, #10-16). Reminder to do extra problem from board for homework.
Period 5 - went over the homework that was due today (Packet 2, #1-9) and then finished Projectile Motion lecture. Homework is Packet #2, #10-16
Period 6 - went over the homework that was due today (Packet 2, #1-9)
Period 7 - finished Projectile Motion lecture. Homework is Packet #2, #10-16

Tuesday:
Period 2 - go over hmwk, Packet 2, #10-16 and then start lab
Period 6 - finish Projectile Motion lecture. Homework will be packet 2, #10-16

I also posted a new set of lecture slides for Vectors and Projectile motion that have all the solutions to the examples in them. Get the file here: https://sites.google.com/site/dandradeedusite/Home/physics-class-files
(Physics - Vectors and Projectile Motion.pdf)

Schedule Update

Friday, 9/17/2010


Period 2 - we went over the homework (packet 2, #1-9) and collected the lab packets


Period 3 - we did the second part of 2D motion (projectile motion). Your homework is Packet 2, #10-16
The lab packets were also collected.


Period 6 - we did the first part of 2D motion (vectors). Your homework is Packet 2, #1-9

The lab packets were also collected.

Period 7 - we went over the homework (packet 2, #1-9) and collected the lab packets

The class slides are now posted for all of 2D Motion.

You can find them HERE. The file is called "Physics - Vectors and Projectile Motion.pdf"

This file includes the examples and the summary of the trigonometry functions.


Remember to email me if you have questions with your homework.


Reminder: if you did not turn in your lab today, it is late. 5 points off for each day late, so turn it in immediately.




Monday, 9/20/2010


Period 2 - we will continue 2D motion (projectile motion)
Period 3 - we will go over the homework (Packet 2, #10-16)
Period 5 - we will go over the homework (Packet 2, #1-9) and then continue 2D Motion - Projectile Motion)


Period 6 - we will go over the homework (Packet 2, #1-9)
Period 7 - we will continue 2D motion (projectile motion)

Schedule Update

Thursday, 9/16

Period 3 - we went over the homework today (Packet 2, #1-9). On Friday we will continue 2D motion and learn about Projectile Motion.

Period 5 - did the 1st part of 2D motion. Homework is Packet #2, #1-9 due Monday. Don't forget to get me your lab packets. If turned in Friday, it's only a little late. If turned in Monday, it's VERY late.

Period 7 - did the 1st part of 2D motion. Homework is Packet #2, #1-9 due Monday. Don't forget to get me your lab packets turned in on Friday.

Schedule Update

Today, Wednesday:
Period 2 and 3 started 2D motion and vectors. 
Period 2 - Packet 2, #1-9 is due Friday
Period 3 - Packet 2, #1-9 is due tomorrow. 
Period 6 - we went over the rest of Packet 1 homework and did the velocity/acceleration lab.




LAB Packet Due Date Reminders:
Period 2 - Friday
Period 3 - Friday
Period 5 - Thursday
Period 6 - Friday
Period 7 - Friday


Thursday, 9/16:


Period 3 - we will go over the homework (packet #2, #1-9) and then continue with 2 Dimensional Motion

Period 5 - collect the lab packets and then start 2 Dimensional Motion


Period 7 - collect the lab packets and then start 2 Dimensional Motion

Schedule Update

LAB Packet Due Dates
Period 2, 3 and 6 - your lab packets are due Friday, 9/17
Period 5 and 7 - your lab packets are due Thursday, 9/16

Today, Tuesday, 9/14 we did the following:
Period 2 - finished the velocity/acceleration lab
Period 5 - finished the velocity/acceleration lab
Period 7 - went over the homework (problems 9-14) and did the velocity/acceleration lab

Wednesday, 9/15
Period 2 and 3 will start 2 Dimensional Motion
Period 6 - we will go over the homework (problems 9-14) and do the velocity/acceleration lab

Remember, email me (dandrade@bridgeportedu.net) if you have any questions on homework or assignments.

Schedule Update

Period 2, 3 and 6 - your lab packets are due Friday
Period 5 and 7 - your lab packets are due Thursday

Today, Tuesday, 9/14 we did the following:
Period 2 - finished the velocity/acceleration lab
Period 5 - finished the velocity/acceleration lab

Wednesday, 9/15