End of Semester

Today and tomorrow are finals days, so they are half days. We are not having a final - we are just taking your last unit test on momentum. I will send a message on Remind when those tests are in, so you can look in Synergy and decide if you want to do any last minute work to improve your grade.

General reminders:

• I am not available right after school Wednesday, but will be back after lunch (to grade today's tests). I am available after school Thursday.
• You can still get missing labs checked for full credit and you can correct labs for full credit.
• You can retake any test you earned less than 80% on (except the momentum test you're taking today - there just isn't time).
• You can turn in old homework for half credit.
• If nothing is missing, you can turn in extra credit (see extra credit tab on this blog) for up to 100% in the homework category.
• I need everything by 8 AM Friday morning (email to lisa.volkening@tusd1.org if afterhours Thursday). Note that you have to retake tests in person, so those will have to be done no later than after school Thursday.

Email me or use Remind if you have a question about your grade (Remind will get to me faster).

Momentum Test Practice

First you did your last Plickers, and then you took a 5-question, multiple choice quiz that I need for data. It won't hurt your grade.

The rest of the period was work time. Don't forget to get your last lab checked. Your last unit test is on your finals day.

Here is the momentum test practice. The key is here. Here are some of the video solutions:

#1
#2
#3

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!

Suggested homework: finish Momentum TIPERs #1 and do p.191 #8 & 15 . You will check this yourself - I don't want to grade it!

You might also have picked up a momentum test practice. The key is here. Here are some of the video solutions:

#1
#2
#3

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

Suggested homework is 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:

Here is a solution to the second example problem:

Suggested homework: p.194 # 49 & 51

Lab: Conservation of Momentum

Today you are completing Lab: Conservation of Momentum. This is your last lab grade for the semester.

Collisions

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

Notes: Collisions

The PhET collision simulator is here.

Suggested homework tonight is p. 192 #29, 31, 34a

You also need to complete the pre-lab for Lab: Momentum Conservation.

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.

Suggested homework: p. 192 #25, 26, 27

Momentum Intro

Today we had one slide of notes and a bunch of practice problems:

Notes: Momentum Intro

Then you worked on your suggested homework: p. 190 #1, 3, 6, 7 (this might look like a lot, but they are all very short problems).