Energy Test Practice

Today was your work day to prepare for the energy test next class. You'll also have 20-30 min of work time before your test next class.

Energy Practice Test
Energy Practice Test Key

Here are some solutions videos from a couple of years ago (may not perfectly match energy practice test).

Multiple Choice #1
Multiple Choice #2
Problem #1
Problem #2
Problem #3

Below are the abridged answers.

Machines and Efficiency

First, I forgot my phone today, so the Plickers problem we were going to do from last night's suggested homework has been pushed to next class. This means there may be more than one Plickers problem next class.

Today we very briefly talked about machines and efficiency.

Notes: Machines

Your suggested homework is a little half sheet called HW: Machines.

On Monday/Tuesday nest week you will be completing a lab. The goal is to answer the question: does the angle of a ramp affect its efficiency? If so, what is the relationship? How you answer this question is up to you, so think about it over the weekend.

Work Due to a Variable Force + Work Problems Practice

Today we found the work due to a variable force with graphs and used that to find velocity at a given position.

Notes: Work Due to a Variable Force (remember to download and run as a slideshow)

We practiced in class with Energy TIPERs #4 (email miss.volkening@gmail.com for a copy). We went over the answers in class.

Suggested homework for this content is p. 163 #59, 60, 61.

Then we did a problem together (see below) and started working on Energy TIPERs #5. You might not have finished in class. Although Energy TIPERs 5 is suggested only and you will not be turning it in, please try to finish it sometime and check your answers in the answer key binder. The back especially is a really good problem - it is actually from an old AP test.

Here is the problem we did solved without numbers:

Work

What is work? This is not a philosophical question.

Notes: Work

We worked on Energy TIPERs #3 in class today, which you kept as notes.

Suggested homework is p. 158 #8, 9, 13, 16. If you never completed p.160 #25, 33, 37, you might want to try those too.

Energy Test Practice

First you voted on which of last night's homework to go through as a class. I may have asked a student to do the problem, depending on the class period (and if anyone felt comfortable enough to go up to the board). Then you started your practice test. Your test is next class, at the end of class, so you will have a little time to study beforehand. We'll also go over Energy TIPERs #7 very briefly at the beginning of next class.

Energy Practice Test

Here are some solutions videos from a couple of years ago (may not perfectly match energy practice test).

Multiple Choice #1
Multiple Choice #2
Problem #1
Problem #2
Problem #3

Below are the abridged answers.

Elastic Potential Energy

Today we defined elastic potential energy.

Notes: Elastic Potential Energy

Homework: p. 159 Problem #20 + p.157 Conceptual #11. Also start the front of Energy TIPERs #6 and we'll do the back tomorrow.

Efficiency Lab

Today you completed a small lab to find if the angle of an inclined plane affects its efficiency as a machine:

You also have some homework, due Wednesday: p.162 #47 & 89

Machines

Today we very briefly talked about machines and efficiency.

Notes: Machines

Your homework is a little half sheet called HW: Machines.

On Monday/Tuesday nest week you will be completing a lab. The goal is to answer the question: does the angle of a ramp affect its efficiency? How? How you answer this question is up to you, so think about it over the weekend.

Power

Notes: Power!

Here is the solution to the last example problem:

Homework: p. 162 #45, 50 (use Watts instead of horsepower), 56 

Force Quiz and Work Problems Practice

Today we first completed a 30 minute, 10 question multiple choice quiz about forces. Then we did a problem together (see below) and finally worked homework.

Homework: Energy TIPERs #5 (email miss.volkening@gmail.com or reply on Remind for a copy), due THURSDAY. Warning: Energy TIPERs #5 is not easy, but we do have a little time on Thursday for help, so please do not stay up all night stressing about it. You have the PSAT on Wednesday; please focus on preparing and resting for that.

Here is the problem solved with numbers:

And again without numbers first:

Work Due to a Variable Force

Today we found the work due to a variable force with graphs and used that to find velocity at a given position.

Notes: Work Due to a Variable Force (remember to download and run as a slideshow)

We practiced in class with Energy TIPERs #4 (email miss.volkening@gmail.com for a copy). This was NOT turned in for a grade.

Homework tonight is Chapter 5 (p. 163) #59, 60, 61

Work

What is work? This is not a philosophical question.

Notes: Work

We worked on Energy TIPERs #3 in class today, which you kept as notes.

Homework is p. 158 #8, 9, 13, 16

Energy Test Practice

First you voted on which of last night's homework to go through as a class. I may have asked a student to do the problem, depending on the class period (and if anyone felt comfortable enough to go up to the board). Then you started your practice test. Your test is next Thursday, and some of next class will be taken up by completing and peer - grading one more TIPER, but the rest of next two class periods will be yours to work on this practice test and get your various labs checked.

There is no assigned homework for the weekend. Maybe go to the Teen Astronomy Cafe?

Energy Practice Test

Here are some solutions videos from a couple of years ago (may not perfectly match energy practice test).

Multiple Choice #1
Multiple Choice #2
Problem #1
Problem #2
Problem #3

Below are the abridged answers.

Using Elastic Potential Energy in Energy Conservation Problems

Today we basically did several examples of energy problems that include springs:

Notes: Elastic Potential Energy and Energy Conservation

At the end of the period I asked you to finish Energy TIPERs #6, then we checked it together and you kept it. Please do not turn that in.

Homework tonight: p.160 #35, 39, 67. We will do one in class together tomorrow.

Here is the solution to the last problem in the notes:

Elastic Potential Energy

Today we defined elastic potential energy.

Notes: Elastic Potential Energy

Homework: p. 159 Problem #20 + p.157 Conceptual #11. Also start the front of Energy TIPERs #6 and we'll do the back tomorrow.

Inclined Plane Lab

Today you completed a small lab to find if the angle of an inclined plane affects its efficiency as a machine:

You also have some homework, due Wednesday: p.162 #47 & 89

Machines

Today we very briefly talked about machines and efficiency.

Notes: Machines

Your homework is a little half sheet called HW: Machines. I checked your Energy of a Bouncing Ball Lab while you started that homework.

On Monday/Tuesday nest week you will be completing a lab. The goal is to find the frictional force on a cart rolling up/down a ramp, plus find the efficiency of said ramp. How you do these two things is up to you, so start thinking about it over the weekend.

Power

Notes: Power!

Here is the solution to the last example problem:

Homework: p. 162 #45, 50 (use Watts instead of horsepower), 56 

Lab: Energy of a Bouncing Ball + Work Due to Friction Problem

Today we first completed a 20 minute, multiple choice quiz over first quarter content. Then we did a problem together (see below) and finally worked on the lab Energy of a Bouncing Ball.

Your homework tonight is to finish your lab and also complete Energy TIPERs #5 (email miss.volkening@gmail.com for a copy), due THURSDAY. Warning: Energy TIPERs #5 is not easy, but we do have a little time on Thursday for help, so please do not stay up all night stressing about it. You have the PSAT on Wednesday; please focus on preparing and resting for that.

Here is the problem solved with numbers:

And again without numbers first:

Work Due to a Variable Force

Today we found the work due to a variable force with graphs and used that to find velocity at a given position.

Notes: Work Due to a Variable Force (remember to download and run as a slideshow)

We practiced in class with Energy TIPERs #4 (email miss.volkening@gmail.com for a copy). This was NOT turned in for a grade.

Homework tonight is Chapter 5 (p. 163) #59, 60, 61