Uniform Circular Motion

We have about one week of time to fill, so we're going back and doing some problems on uniform circular motion that we really should have done in the forces unit. These are a lot like problems we did last year in first-year physics.

There is a short WebAssign homework, due on Sunday night.

More Homework Problems

#3 on Energy #3
#4 on Energy #3
#11 on Energy #3

Homework Problems

#6 on Energy #3
#7 on Energy #3
#9 on Energy #3
#13 on Energy #3

Potential Energy Curves

Potential Energy Curves Part 1

Potential Energy Curves Part 2

Lab: Find k

We'll be working in this at least through Thursday.

Homework Problem

#13 on Energy #2

Homework Problems

#8 on Energy #2

Homework Problems

#6 on Energy #2

#14 on Energy #2

Homework Problems

#2 on Energy #2

#5 on Energy #2

New WebAssign: Energy #2

A new WebAssign homework is up! The estimated time is 5 hours and it is due next Monday at 11:00 PM.

Power

Lecture on Power - please watch.

Power

Homework Problem #8

#8 on Energy #1
HRWP7P005 - Father and son running

Homework Problems #4 and #6

#4 on Energy #1:

HRW97CQ05: Using Force vs. Position graphs to rank the work done

#6 on Energy #1:

HRW97P001: Final velocity and change in kinetic energy for an accelerated proton

Energy Mini Lab!

Today we're playing with balls!

Work Done by a Variable Force

Please watch this lecture on Thursday:

Work Done by a Variable Force

Practice Test

Today we went over how to handle drag force problems. That was our last piece for this unit, so it's time for the testing cycle! You will have a practice test on Thursday with last minute tutorials on Friday. Monday is your test. Tuesday will combine your points arguments and a new assignment on WebAssign for the next unit.

Homework Problems

#11 on Forces #2

#12 on Forces #2

#14 on Forces #2

#15 on Forces #2

Lecture Homework: Friction

By Friday please watch this review of friction:

Friction Lecture

This is all stuff we did last year. We will be doing a short lab on Friday involving friction.

Homework Due Date Extended

Because of WebAssign's continued unpredictability, I have extended the e deadline for Forces #1 until Thursday night. We will spend Thursday's class period working on it. I will have a new lecture up for Thursday night's homework.

Keep Trying WebAssign!

I know WebAssign has been having trouble lately...please keep trying to do your homework. Today we worked on it most of class and I did the problem of three people pulling on a stationary tire.

Newton's 2nd Law Lectures

More Newton's Second Law lectures of increasing complexity.

Newton's 2nd Law Part 2

Newton's 2nd Law Part 3 - Inclined Plane

Weekend Homework

For the weekend please watch this lecture:

Newton's Second Law Part 1

And start on your new WebAssign homework.

Forces Review

Today in class we will review some conceptual applications of Newton's three laws. Your homework tonight is to watch this review on some more quantitative characteristics of forces. You may also want to look at the new WebAssign homework, which will be up by tonight.

#9

#9 on 2-D Motion #1

Another Homework Problem

This is #8 on 2D Motion #1.

HRW94P028 - Projectile fired from ground lands on top of a cliff

2-D Motion Part 3 + Homework Problem

First, the last lecture on 2-D Motion:

Motion in 2 Dimensions Part 3

Also, I worked out #12 on the homework 2-D Motion #1. This is the one about throwing a ball off a building.

More on 2-D Motion

Here is the second lecture on 2-dimensional motion. There is going to be a part three where we calculate more things about this same problem, but I am just too sick right now. Look for it sometime this weekend.

2-D Motion Part 2

Open Ended Lab: Launch Velocity

Today us our first open-ended lab, which means I will not tell you what to do. Here's what we want for the finished product:

America!

Motion in 2 Dimensions Part 1

Homework Monday night is to watch this video and take notes. We'll be doing a lab similar to this problem on Tuesday!

Motion in 2 Dimensions Part 1

Unit Vectors and Motion in Two Dimensions

Please watch this as soon as possible and come to class with questions:

Unit Vectors

I'll post another one sometime tonight that will be homework tomorrow.

#9 on Vector Components

Had the stuff hooked up already, so I did another one:

#9 on Vector Components

#6 on 1-D Motion #2

Someone messaged me that he/she was having trouble on this one, so here we go:

#6 on 1-D Motion #2

#5 on Vector Components

I woke up early enough to do one short problem from your Vector Components homework before my meeting. I'll be home just after three this afternoon.

#5 from Vector Components

Worked-Out Problems

I tried out my new whiteboard by working through a couple of your homework problems.

#3 on 1-D Motion #2: HRW92P027
#5 on 1-D Motion #2: HRW92P044

More Vector Components!

Yesterday for our block period we started working on this vector lab. You can finish this on Thursday. In the meantime, please keep working on the WebAssign assignments that are due Saturday night.

REMINDER: If you haven't yet, please add an email address to your WebAssign account.

Also, I've made a group on Facebook for this class: DVHS AP Physics. I'll update it whenever I update this blog, so those of you experiencing problems with the subscription feed of the blog can get faster updates from the Facebook group.

Vector Components and New WebAssign

Two more WebAssign...assignments...are up: 1-D Motion #2 and Vector Components. These are both due next Saturday night, but I suggest you get started on them sooner than that. A review on vector components is here; please watch this for homework tonight.

First WebAssign!

Yesterday we completed a lab using Vernier motion detectors to graph position vs. time graphs. By tomorrow, Thursday, please sign into WebAssign and attempt the first assignment. I know you can do the first one because we did a similar one in class, plus I made this video last spring when I was testing my capture tablet. For the others, try your best and be ready with questions on Thursday.

Position vs. Time

So what is calculus good for in physics? Well, it's good for finding slopes. Slopes give the rate of change of whatever you're graphing. So what happens when you graph a physics thing, like position, and take it's derivative (find the slope)? More physics things, that's what!

Please watch the videos below for homework tonight. They are not my best...it was a long day. Sorry :(

Derivative of Position w/ Respect to Time

Multiple Derivations of Position - What do they mean?

Calculus Boot Camp!

Homework (due on Thursday): watch these videos about derivatives and integrals! Take notes and come to class with questions; we will do some practice problems during class.

Derivatives
Integrals

You can change the resolution to HD!

Welcome!

This class will be a lot of work, but please don't be afraid; we will have a lot of fun, too. This is my first attempt at a "flipped" classroom, so please give me feedback on what is working, what is not, and what we can do better or what else you need to be successful. I am a student just as much as you are.

I will use this blog to post lectures you need to watch for homework as well as reminders for tests, homeworks, and other assignments. Whenever I manage to make extra videos working out a specific problem, I will also post here. I suggest subscribing with a feed or by email using the boxes to the right so you don't miss any posts.

For those of you that want to use old resources but don't want to search through this blog, I will also be archiving everything at sites.google.com/site/desertviewapphysics/, organized by unit.

First assignment! Read through the syllabus and safety contract and return the safety contract tomorrow, plus log into WebAssign and change your password. Instructions for logging in are the topic of our first video lecture!

Logging into WebAssign

Syllabus

Safety Contract (English)

Safety Contract (Spanish)