Coefficient of Static Friction Lab

Today you completed the Coefficient of Static Friction Lab. Your homework is to finish it if you didn't finish in class. This should be completed entirely in your notebook. - have me check it next week.

We will also be doing another lab on Monday/Tuesday: Newton's 2nd Law Lab. You might want to at least read through this before class.

More Practice

Today we did another problem together on the board:

You then had more work time.

Homework: p.117 #30 & 51

Friction Practice

Today we first went through a problem together:

The rest of the period was yours to work. Homework: p.118 #39, 43.

Friction

Today we started talking about friction:

Notes: Friction

We completed Friction TIPERs #1 in class; Friction TIPERs #2 and Friction TIPERs #3 are homework. Email miss.volkening@gmail.com for copies.

And Yet MORE PRACTICE

We're having another work day!

p. 114 MC #10 + p.116 #24 & 36A (but without numbers - find acceleration in terms of m1, m2, and g).

This is homework if you don't finish in class.

More Practice

Today and tomorrow you will be working on more practice problems involving forces. Tomorrow you will not have the whole period because we will do some problems together with Plickers.

Here is the problem set for today (homework if you don't finish in class): p. 117 #26, 29, 35, 38

In case you run out of stuff to work on, this will be tomorrow's problem set: p. 114 MC #10 + p.116 #24 & 36A (but without numbers - find acceleration in terms of m1, m2, and g).

Inclined Planes

Today we went through how to deal with inclined planes. There is only one major change: you tip the axes over so that the x-axis runs parallel to the surface of the inclined plane and the y-axis is perpendicular to the inclined plane.

After you tip the axes you proceed pretty much the same as yesterday.

Hopefully you started your homework in class:

p. 117 #27 & 28

Solving Word Problems Involving Forces

Today we went through a method of solving word problems that involve Newton's 2nd Law:

Notes: Solving Newton's 2nd Law Problems

Homework is p. 116 #17, 21, 25

Newton's 3rd Law

Today we talked about the last of Newton's three laws as well as the normal force.

Notes: Newton's Third Law

Tomorrow you have a half day, but you won't actually be in class, so you have extra homework. Some of it you probably finished in class:

• Force TIPERs #1
• #6-9 on the Forces Non-Textbook Problems
• Force TIPERs #2 (we'll go over this one together next class, so please make an effort but don't turn in)

Here are the free-body diagrams for boxes A and B on the back of Force TIPERs #1:



Here are some sketches about normal force that made it up onto the board.

Newton's 2nd law

Today we had a taste of Newton's Second Law:


Notes: Newton's Second Law

Homework:

p. 115 Problem #2 + Forces Non-Textbook Problems #4 & 5

Forces and Newton's First Law

Today we started our forces unit with Newton's first law and free body diagrams:

Notes: Forces and Newton's First Law

We worked on a Net Force worksheet in class - it is homework if you didn't finish. Respond on Remind if you need a copy.

Homework is #1-3 on the Forces Non-Textbook Problems Bank. Please do not write your answers directly on this paper - you need to write your answers on a different piece of paper and turn that in tomorrow.

2-D Kinematics Quiz

First thing today you took a survey to sign up for Penguin Pathways workshops. These are being held during the half day next Friday.

tinyurl.com/PenguinPathways2018

Then you had some study time, and about 10 min into the period I asked you to clean up and prepare your area for your quiz. This gave you about 45 minutes for the 4-question quiz on 2-D Kinematics.

2-D Kinematics Quiz Practice

Today was your workday to prepare for your unit test. I'm calling this one a quiz because it is half the length of your last unit test, since we only have about a week and a half of stuff to include.

Here is a practice quiz for you: 2-D Kinematics Quiz Practice

And here is a key: 2-D Kinematics Quiz Practice KEY

Tomorrow we will first take a survey about what sessions you want to attend during Penguin Pathways next Friday, then we'll take the quiz for the rest of the period.

Finishing Projectile Motion Lab

First we went over Projectile Motion TIPERs #2 together. Keep that for your notes.

The rest of the period was yours to finish your Projectile Motion Lab. Your homework is to finish that so I can check it in your notebook tomorrow while you are working on a practice quiz

You will have a short (half the length of last unit's test) quiz about the 2-D motion stuff on Friday. I will give you a practice quiz for that tomorrow.

Graphing Quiz and Projectile Motion Lab

First we took a 10 MC question, 20 minute quiz about kinematics graphs.

Next you started the Projectile Motion Lab. Note that this is done completely in your lab notebook; you are not turning this in, but it will be checked. You have tomorrow to work on this too, and I would like to check it in your notebook (without actually collecting your notebook) tomorrow.

This is one of the launchers we used - many thanks to the University High School Foundation and Alumni Association for buying these.


Homework is the worksheet Projectile Motion TIPER #2 (email miss.volkening@gmail.com for a copy). You won't actually be turning this in - we will go over it together tomorrow.