Solving Projectile Motion Problems

Today we went through a process for solving projectile motion story problems.

Notes: Projectile Motion Problems

Here is the work for the airplane problem:

Here is the work for another problem in which someone jumps with a speed of 11 m/s at an angle of 20 degrees above the horizontal. We found the time it took to reach max height, the jumper's max height, and the horizontal distance the jumper went before coming back to his/her original height.


Suggested homework is p. 80 #25, 27, 29, 30, 48. If you want a real challenge, try #47. We'll be starting this lab on Tuesday (no school Monday) and also taking a 10 MC problem extra credit quiz.

Motion in 2 Dimensions (Projectile Motion)

Motion in 2 Dimensions (Projectile Motion)

I could not get my videos to embed in my Powerpoint - sorry! - so here are links to the ones we saw:

Three Balls Roll Off a Table
Mythbusters Bullet Drop
MIT Monkey Problem

Homework: Projectile Motion TIPER #1 (email miss.volkening@gmail.com for a copy)

Relative Velocity

First we did a Plickers question instead of turning in last night's homework.

Then we looked at a TIPER where you had to evaluate students' statements about vector components.

Later we talked about relative velocity. There aren't a lot of notes; here is what ended up on the board first period:



Mythbusters did a pretty cool experiment showing the forward velocity of a truck cancelling out the backward velocity of a cannonball so that the velocity of the cannonball relative to the ground was zero: Mythbusters Frame of Reference.

Section 3.5 in the textbook also talks about this, albeit with a lot more math than we used.

Homework is in two parts tonight:

A.) Kinematics TIPERs #4 (email miss.volkening@gmail.com for a copy) - You will turn this in
B.) Suggested: p.82 #41 & 44 (won't turn in)

Vectors

Today we talked about adding vectors in general. There is very little physics today - just math that we'll need from now on.

Notes: Vectors

Homework: p.78 #1, 17, 18

You will also have a graphs-only extra credit MC quiz (20 min) on Wednesday.

Work Time

Today was a work day to prepare for your test tomorrow and finish your Free Fall Lab. See yesterday's blog post for the practice test and its key.

1-D Kinematics Practice Test

Today was your first day to work on your practice test. I also took a few minutes to go over how to maximize points earned on my tests:



Below are pictures of the abridged key.


We also talked about what to do if Synergy says you're missing something that you are sure you turned in. Do these things in this order:

1. Check the no-name papers (top tray in the returned work trays)
2. Retrieve your returned work. Sometimes I put the score in the wrong column or row. If this has happened, just find the graded and returned paper and show it to me so I can fix it.
3. You turned in the paper, but later than the due date. These will take me longer to get to. In the meantime, Synergy will show the assignment as "missing." The only thing to do is wait a bit longer.
4. Check your stuff. Maybe you completed the assignment but didn't actually turn it in.

You'll have a full work day tomorrow, and your test is Friday. I want to check your Free Fall Lab during your test, so please have that done by Friday too. I can also check that early if you finish early.

Free Fall Lab

Today we are working on the Free Fall Lab. First I went over exactly why we are doing this lab and introduced the idea of linearization. The rest of the period was yours to take data, including about half an hour of the whole class going outside to drop the balls off of the bleachers.

To save time (and prevent the loss of the Koosh balls through a certain fence) the whole class timed the ball drops from the tallest bleachers as a group.

You have no additional homework tonight. This is due on the day of your test (Friday). I will be checking it in your notebooks while you take the test.

Edit: it was way to hot for 6th period to go outside (above 104), so they got to steal some of 4th period's data. It is on the picture of the whiteboard below.

Problem Solving Method

Today we went through a problem solving method for story problems. You don't have to use this method, but I recommend using it at least at first.

Notes: Solving Kinematics Word Problems

Homework is p.52 #37, 43, 46, 51, 54. You will turn this one in.

We will be doing a lab on Monday/Tuesday. Please read over the lab instructions this weekend and bring your lab notebook to school.

Part of the lab will be outside. You may want to bring sun protection.

Today we also went over how to register for this class on the College Board website. Here's how:

1. Go to myap.collegeboard.org
2. Login with your College Board credentials, or create an account if you don't have one.
3. Once you are in, click Join a Course or Exam
4. Submit your join code. The join codes are unique to your teacher, class, and class period, so make sure you use the right one! You were given it in class, and I will also text it out on Remind.
5. Make sure the info that comes up is for the course you are taking. If it is, click Yes.
6. The first time you enroll in an AP course in My AP, you’ll need to fill out some registration information. It’s important to provide accurate information. You only have to do this once.
7.You're done! Good job.

1-D Motion Equations

Today we finally got some equations that will let us solve for position, velocity, and acceleration at a given time.

Notes:1-D Motion

Suggested homework is p.52 #31, 33 a&b, 45. We'll have a Plickers problem tomorrow.

Graphs of Motion - Backwards

More graphs! Just going from acceleration to velocity to position instead!

Notes: Graphs of Motion-Backwards

Homework is Kinematics TIPERs #3. Email me for an electronic copy if you need it.

Acceleration and Graphs of Motion

During bellwork we talked about your Constant Velocity labs (please turn in ASAP) and also made our first velocity vs. time graph. Then we defined acceleration, looked at how it affects motion diagrams, and made acceleration vs. time graphs out of velocity vs. time graphs.

Here is the Powerpoint: Acceleration and Graphs of Motion

Suggested homework is p.51 #24 and p. 55A # 1&2 (55A is a special page only in the "AP Edition" of the textbook. You might not have it in your textbook; contact me if you do not and I will send you a picture). Instead of you turning this in, we will have a Plickers question for Bellowork on Wednesday.

Below are the answers for the bellwork.

Velocity and Graphs

Today we used graphs to find both average velocity and instantaneous velocity. The notes about instantaneous velocity included a graph on the whiteboard.

Notes (Powerpoint): Using Graphs to Find Velocity
On the board:

Homework tonight is the half-sheet HW: Velocity. You're actually going to turn this one in.

We also received the instructions for the lab we're doing tomorrow, Constant Velocity Lab. You will have all day tomorrow to work on this.

Displacement, Average Speed, and Average Velocity

Today we started our actual physics content with position, displacement, average speed, and average velocity.

Notes: Displacement, Average Speed, and Average Velocity

You may have started your homework at the end of class: Kinematics TIPERS #1. This is our first "suggested" homework, which means that instead of turning it in you will have a similar Plickers question tomorrow. Your performance on that will give you your homework grade.

The answers to all homeworks, whether suggested or turned in, are in the white binder in the back of the classroom, so you can check your own work if you want.

Mini Labs

Today played with the equipment from upcoming labs so that you can figure out the best way to take data. If you were here and participating, you earned some lab points. If you were absent, it will just be excused.

But first, we learned how to use Plickers with some practice problems about graph shapes.

No homework!

Measurement and Error

Today we talked about standard units of measurement, why we have significant figures, and the two types of errors.

Notes: Measurement and Error

This weekend please get a lab notebook, preferably with graph paper pages.

Next week we’ll be doing little labs to get familiar with equipment. For homework, think of ways to measure the following that would reduce errors the most:

• Time for a ball to fall a certain distance
• Distance a projectile travels
• Height a ball bounces up to
• Time it takes a toy car to travel 2 meters

Welcome!

Welcome to AP Physics 1 with Ms. Volkening! Today we went over the class policies and procedures, passed out all the paperwork, etc.

Here is the Powerpoint used in class: Day One

You received copies of  a letter for your parent/guardian, a safety contract, and an equation sheet. To save paper, I did not print out the syllabus, but it can be found here: syllabus. Please note that on the parent/guardian letter, the Remind code is @volkening[period], where you put your period number where the brackets are. So if you are in my 4th period, you would use @volkening4 .

You need to bring back the safety contract signed by you and your parent/guardian.

Please also take this survey to help me with preferred names and seats:

Volkening Beginning of the Year Survey