Last Day

Grades should be updated with finals by 2 or 3 this afternoon. Please check Synergy; whatever it says there is your semester grade unless you do something. Email me at miss.volkening@gmail.com if you think there is a mistake or come see me after school today or 8 AM tomorrow. If you think you turned in something and Synergy says it's missing, you will have to bring the graded work and show it to me to get it corrected.

Reminders:

• Labs, test retakes/makeups, and extra credits are due tomorrow at 9 AM. You can email typed documents or GOOD, WELL-LIT, IN-FOCUS pictures of work to miss.volkening@gmail.com. If I can't read the work, it gets a zero.
• I only round a grade up if nothing is missing and the next grade is half a percent or less away.

Impulse Due To a Variable Force

What is the change of momentum due to a force that is not constant? This was the question we attempted to answer today.

Notes!

Homework: Chapter 6 (p.191) #8 & 15 + CONCEPTUAL #11 (p.190). You will check this yourself - I don't want to grade it!

You probably also received a missing assignment report or grade report. If you get that signed by a parent or guardian and bring it back, I will give you a little extra credit.

Here are the due dates for work:
Wednesday 12/20 8 AM: All missing homeworks are due.
Friday 12/22 9 AM: All test retakes, lab checks, and extra credit are due. I'll be at work by 8 AM.

You might also have picked up a practice test for the free response section of the final. Here are the video solutions for the free response practice problems:

#1
#2
#3
#4

Here is the key:

Impulse

So far we've only talked about situations where momentum is conserved - that is, there are no outside forces. Today we talked about what happens when there are outside forces - the momentum changes! This change in momentum is called impulse.

Notes on Impulse

Video we watched

Homework is Chapter 6 (p.191 ) Problems #9, 11, 13 + CONCEPTUAL Problem #12 (p.190)

Momentum in 2 Dimensions

Today we expanded our conservation of momentum problems into 2 dimensions.

Notes!
Here is the solution to the first example problem:

Homework: p.193 # 49 & 51

Lab: Conservation of Momentum

Today you are completing Lab: Conservation of Momentum. This is the first time I've done this lab with students, so please give me feedback about best practices that could make the lab go more smoothly.

Homework is p.193 #36a, 37, 40

Collisions

Today we talked about collisions, which are really just another kind of momentum conservation problem.

Notes: Collisions

The PhET collision simulator is here.

Homework tonight is Ch. 6 (p. 192) #29, 31, 34a

You also need to complete the pre-lab for Lab: Momentum Conservation. Sorry that the diagrams are missing; here they are:

Conservation of Momentum

Today we had very few notes:

Notes: Conservation of Momentum

The rest of the period was yours to start your homework since it's a bit longer than yesterday's.

Homework: Ch. 6 (p. 192) #25, 26, 27

Momentum Intro

We squeezed in the intro to the next unit today:

Momentum Intro

Your homework is Chapter 6 (p.190) #1, 3, 6, 7

Rotational Motion Test

Today you had about 40 minutes of study time, then took your Rotational Motion Test.

No homework tonight, but if you have not yet finished your lab from last week please do so.

Rotational Motion Test Practice

Rotational Motion Test Practice

Answers

Solutions videos:
#1
#2
#3
#4
#6
#7
#8
#9

Remember that any of these numerical problems could be a symbolic problem (no numbers) on the test.

I tried to check everyone's labs today, but if I didn't get yours checked please have it ready on Monday/Tuesday.