Tonight's homework is as follows:

A stationary 15 kg object is located on a table near the surface of the earth. The coefficient of kinetic friction is 0.25. A horizontal force of 40 N is applied to the object.

Draw a free body diagram with the forces to scale.

Determine the force of friction.

Determine the acceleration of the object.

If you wanted to watch the mythbusters again, here it is.

Weekend Homework & More on Mercury

This is your homework:

Do the multiple choice questions 1-34.

This will be due next Friday, but that doesn't mean do it Thursday night. Pace yourself. There are 7 days in a week, try 5 multiple choice problems a night so that if you have questions, you can either post them here or ask them in class.

If you want to read more about the discovery of ice water on Mercury, here's a link to NASA's press release.

FBD Quiz Tomorrow!!!

In preparation for the quiz tomorrow, do Problem 37 in the chapter problems. Here is the actual problem:
I have it transcribed here:

A hockey puck slides on a rough horizontal surface with a constant velocity. Draw a free-body diagram for the puck and compare the magnitudes and the directions of all the forces exerted on it.

This is how I want every problem done on the quiz.

More FBD Homework and Quiz Thursday!!!

I posted the homework last night at 7:30, so I would like to give you another chance to complete the homework. I will be checking both Problems 35 and 36 tomorrow. That means tonight's homework is numbers 35 and 36:

1.     A crane lifts a load at a constant speed. Draw a free-body diagram for the load and compare the magnitudes and directions of the all forces.

2.     A crate is accelerated at a constant rate along a rough horizontal floor. Draw a free-body diagram for the crate and compare all the forces exerted on the crate.

Tonight's homework is to make an FBD for the following problem:

A crane lifts a load at a constant speed. Draw a free-body diagram for the load and compare the magnitudes and directions of the all forces.

We will go over this tomorrow.

This is number 36 on the Chapter Problems.

The Next Unit: Dynamics!!!

Tomorrow we will be starting a new unit, Dynamics. This deals with forces and vectors, so its a lot of geometry, but it will use the formulas for kinematics as well. Here is the video we will be watching tomorrow.

We will be doing a few virtual labs on this as well.

All the homework will be from the following documents:

Multiple Choice Practice
Free Response Practice

For tonight (Thrsday night), the homework is Multiple Choice 1-6.

Quiz Tomorrow!!!

Tomorrow's quiz will take up THE WHOLE PERIOD!!! We will start as soon as we get in.

I will not be providing calculators!!!

Bring your own calculator!!!

You will need it!!!

There is homework on mixed equations:

Chapter Problems: 104-117

Practicing these will help you with your quiz tomorrow.

Watch this video before the test. It is great and explains things well:

If you need the transcript of what here is saying, you can find it here.

Kinematics Equation 3 Homework and Help

Today we covered the third kinematics equation:

There will be a quiz on this equation and the other equations this Thursday!!! Bring your own calculator!!!
The homework is as follows:
Chapter Problems 83-88.
Multiple Choice 26-37.

There will be only problems on Thursday's quiz. The problems will draw from all three kinematics equations:

Use Khan Academy if you cannot figure it out!

Here's another sample dealing with projectile height given time:

Homework and Announcements

I am adding a few new features to the blog. By popular request last Friday, I added a twitter account:

https://twitter.com/NECHSPhysics

I now have a Google Voice number for you to call or text:

(347) 76-NECHS or (347) 766-3247

I will be keeping a Google Calendar up for our test and quiz schedule for you to follow via both the embeded calendar above and a subscription link for iOS/Apple (iCal) and regular HTML.

I also have a new email special for our class: NECHSPhysics@gmail.com. Use it.

Tonight's homework is numbers 10-12 in the chapter problems.

We will briefly go over it and then move on to the third equation and mixed problems. There will be a full class quiz this week on Thursday involving kinematics equation three and mixed problems in preparation for Monday and Tuesday's test!!!

On both the quiz and the test, you will only be allowed calculators you have brought with you. If you do not have one, here are my suggestions:

TI-36x Pro
TI-34 Multiview
Or Any Scientific Calculator

They range between $10 and $25. There is no reason to not have one by the test.

New Resources and Weekend Homework

Here's your homework for over the weekend:

Just Kidding...

Here's the actual homework for over the weekend:

Multiple Choice Questions 1-25

Chapter Problems 1-9 AND 70-76

I will be checking the homework for completion on MONDAY!!!

DO NOT FORGET THAT THE LAB IS DUE ON MONDAY!!!

Here's a list of the resources we covered today:

Last Year's East Side Physics Blog
Wolfram Alpha
Khan Academy (You can use this for math too!!!)
Wikipedia
(Only use the reference part at the bottom of the articles. Wikipedia itself is not a legitimate source of information.)
PhET Physics Simulations

If you would like a taste of what college is like, MIT (The Massachusetts Institute of Technology) posted a series of physics lectures by famous physicist, professor, and author Walter Lewin. The lectures are long but entertaining. I would encourage you to watch at least one of them.

STUDENT GOVERNMENT NOMINATIONS
Think about this over the weekend. Your choice of President, Vice President, and Secretary will strongly affect your year. Be careful who you nominate.

As always, if you have questions or comments, email me!

There's another series of web videos (TED Talks) that I wanted to share with you, but I'll do that at a later date.In the meantime, here's a clip from the New York Times about the Endevour Shuttle arriving in LA.

Nerf Gun Lab

Students:

Today was our Nerf Gun lab. The goal is to figure out the muzzle velocity of a Nerf gun. You will be using only the Nerf gun and meter sticks.

Here is the pre-lab which was due today: Nerf Gun Pre-Lab

Here is the data table due this Thursday: Nerf Gun Table

The lab report should have:

An Introduction: This should include your predictions as per which Nerf gun is more powerful and why. How will you figure out muzzle velocity? Which equation will you use? What will your procedure be?

An Analysis: Use your data to figure out the muzzle velocity. Included in this is your data table and any figures or formulas you used to figure out what you needed to figure out.

A Conclusion: Did this lab work? If it did, great! If it didn't, what could be done to better the procedure for next time?

The lab report should be no less than 2 full typed pages and no more than 4 full typed pages. The font size should be no more than 12 point and the spacing should be no more than double. Anything less will be graded accordingly. This does not include the pre-lab questions or the data table, which is to be included in the report.

Include your data sheet and your pre-lab questions in the lab report.

Any questions? Email me!

If you hand it in Thursday or Friday, you will recieve an additional 5 points.

This is due: MONDAY!!!

And now some pictures for inspiration!!!

Enjoy and get me that lab report!!!

In case you need the video from class the other day:

If these videos are helpful, I'll upload more in addition to what we do in class in order to help explain things.

Here's a sample of the Khan Academy, a great resource to use if you are stuck.

UPDATE: As per special request, I am posting some links here to practice problems and other things to help you:

Kinematics Presentation (PDF)
Kinematics Chapter (PDF)
Kinematics Chapter Problems (Word)
Kinematics Multiple Choice (Word)
Solving Equations (PDF)
Solving Equations Problems (Word)
Motion Mountain (PDF)
(Pages 72-78 deal with our lab topic.)

More resources to come...

Kinematics Equation Trainers

Here's a link to the trainer:

https://docs.google.com/open?id=0B6j0mxlGgqOIcklrSGVMX25fRkk

Here's the video from today. Remember to bring in your homework!!!


And here are the last two videos from last week just in case you haven't caught them:

Marathon Problems

Tonight's homework: Create a marathon problem to stump your classmates!!! You MUST know the solution and bring it to class with you!

The retake for the quiz will be on Monday during recess.

Average Speed

Average speed is a simple concept. All it is is the average of your starting and ending speeds. Very simple. For homework, I wanted you to figure out what my real average speed is when play Run, Zombies! I start from rest (0 mph) and speed up to 10 mph! I expect this handed in tomorrow.

Speed Story

As you've probably figured out by now, I wasn't in today. Here is the video that was played in class today. Remember to bring in your homework tomorrow. We will go over it and I will also want some feedback on how it went. Should we do more videos in the future? Have a great evening and I will see you bright and early tomorrow!!!

Mars Rover Project

This is the video with the assignment that you saw today. Remember, I will not be in tomorrow, so remember to bring in your homework on Wednesday!!! If you need to contact me, the soonest I will receive your email or text will be on Tuesday night!!!

Monday and Tuesday

On Monday and Tuesday, I will not be in. There will be work left with a substitute. I expect you all to do the work. If you need to contact me during this time, I will not be checking texts or emails until after sundown on Tuesday. The work I left you is challenging, but if you finish early be forewarned, there will be two quizzes over the course of next week. One will be on speed and the other will be on average speed. I will post your average quiz grades for your homeroom on the data walls that are now in the room and on the outside bulletin board. I will also leave the quizzes for you to review.

Solving Equations

For the next couple of days, we will be working on solving equations. This will help us in solving the more complicated equations in physics. Don't worry, we'll start the real physics stuff on Wednesday. This is all to prepare you. Physics is really math applied to reality.

The homework for Monday that's due Tuesday is located here.
The homework for Tuesday that's due Wednesday will be posted shortly.

If you need a formal text to read, here's a link to it.

Here is an interesting story from Richard Feynman about motion. We'll be using this later in the week.

Freshman Physics at NECHS

Welcome to Physics!!!

Before we begin, I wanted to know more about you. Your homework, due no later than Monday, the 10th of September, is to fill out this survey about yourself.

There are only 3 rules to follow in this class:

1. Respect - Show respect for your teacher, your classmates, and yourselves!!! This means no talking while others are talking. This means no interrupting. If you have something to say, raise your hand and we'll get to it. Respect the opinions of your classmates as you would like your opinions to be respected.
2. Do Your Work - I want you to succeed. You want you to succeed. Everyone wants you to succeed. The best way to do this in physics is to practice and do your work. Practice makes perfect and that's doubly so in physics. Try your best. Do your work.
3. Honesty - Honesty is something I value. If you are honest with me, I can help you. Honesty means asking questions when you don't understand something. Honesty also means absolutely no cheating. Cheating is never ok in my class! This is so important, that I will state it again: Cheating is never ok in my class! Once more with Caps Lock: CHEATING IS NEVER OK IN MY CLASS! By cheating, I don't get a fair assessment of how you are doing.

There are a few things I expect from you and a few things you should expect from me. I list off some mutual responsibilities in this document over here. The syllabus for this class is here. This is what we'll cover on Thursday. On Friday, we will be reading what Richard Feynman has to say about physics.