Classical Physics at MHS Period 7

Hey guys I had an idea for how we can raise money for Operation Plastic Removal:

Here’s an email from my friend Ken Jones (This could be perfect!):

The other piece of this puzzle is related to those blue mounds on the tennis courts. As you may know, those are wood pellets that are ready for delivery, mostly to Montpelier residents. I am organizing distribution dates where we move those pellets in a borrowed truck (3 tons per load) to people’s garages. There is a delivery fee so that for each ton delivered, there is available $20. I am curious if any of the High School groups wants to take on a delivery day (usually about 5 loads or 15 tons) to raise $300.

~ Anne

Hello everyone!

I am blogging for last wednesday.

We decided to work on our ideas and brainstorm for the removal of plastic water bottle project. We, as a class, went to the computer lab and brainstormed ideas about how we were going to make our idea work. The main idea is to give awareness to students in our school the effects of using a plastic water bottle opposed to a steal bottle. We did research confirming the fact that when you use a plastic water bottle and refill it the plastic starts to break down into the water that you are consuming. Among these chemicals is BPA’s which is a chemical that can cause cancer. Our ideas were to buy stainless steel bottles and rent them once a week to the students and they would return them after the week was done. We called klean Kanteen, a stainless steel company that has the same goals we’re trying to accomplish. They liked our idea and could give us a discount.

Interesting fact: It takes 700 years for a plastic water bottle to even begin to break down in the landfill

Morgan

Hiiii
Today in Physics we broke up into committees (financial,cafeteria/dishwashing, and advertising). We’re still working on our project with clean canteen.We have worksheet number 4 due tomorow (i think). And we also have the taste test tomorow!
-Danielle

While you were out researching, here’s what I discovered – we can ultimately calculate how much money will stay here rather than go to Coca-Cola

The City Council approved an increase in water rates and sewer rates effective July 1, 2008. The increased cost of chemicals, fuel, utilities and debt service for the capital improvements requires the rates to increase to support these key City services.

Rates will change for the next quarter’s billing. For the next four quarters the rates will be:

WATER:

Quarterly “ready to serve” water fee will increase from $19.50 to $20.50

SEWER:
$8.22 per 1,000 gallons of water used

Quarterly “ready to serve” sewer fee will increase from $24.50 to $26.00
Customers that are sewer only “flat rate” users are charged $150 quarterly.

from: http://www.montpelier-vt.org/notices.cfm

~ Anne

IMG_0868

Originally uploaded by anneofvermont

Local Water is important to the community ~ here we are planning to use more local water.

Hi This is Joslin

-Gravity Is a constant acceleration. Thanks Universe.

On Friday we did problems using the new variables and equations we learned recently.

Hardness level~1

Drop an orange off of a cliff.   ?How far does the orange travel in one second if its dropped off a cliff?

Distance-?     a- -9.8m/s (acceleration of gravity)    vi-0      t-1

Use…d=vit+1/2at

d=0.1+1/2-9.8*1^2

d=-4.9m

Example Hardness level about 8

How long does it take an object to reach the bottom of a 10 meter cliff if it is thrown upwards from the top of the cliff at 5m/s??

t=?  vi=5m/s d= -10m   a= -9.8m/s^2

d=vit+1/2at^2

-10m=5m/st+1/2-9.8t^2          Then use the quadratic formula to find that the two zeros are -1 or 2, and it can’t be negative so the answer is 2 seconds.

Another way to do this would be using another equation to substitute, like so,

vf^2=vi^2+2ad

vf^2=225   then find the square roots of each, so vf=+or- 15

if vf=-15 then -15=vi+at

-15=5+-10t     do algebra to find t          t=2.

Got Velocity Quizzes back. No Homework.

I forgot if I was suppose to blog Wednesday or yesterday, so I’ll give a quick synopsis of both.

We did a lot of equation stuff over the past two days. The following are all equations for constant acceleration:

V final = Vi + at

d = Vit + 1/2 at^2

d = Vft – 1/2 at^2

Vf^2 = Vi^2 + 2ad

d = 1/2t (Vi + Vf)

These are all for constant acceleration. See ya.

- JB

Hi, this is Ari blogging for today.

We worked on examples of position/time graphs, velocity/time graphs, word descriptions and motion maps in small groups.  Then we presented them to the rest of the class and took notes on other groups’ examples, making sure we knew how to convert one type of graph to another.  At the end of class we went over mathematical modeling, which is finding an equation for a graph.  We learned that in physics you use different variables in these equations; for example, instead of y=mx+b the graph is x=vt+b.  V=velocity, x=position, and t=time in these equations.  Finally, we were told what would be on tomorrow’s quiz on velocity.

The quiz is our only homework.

See you tomorrow!!

Ari

Today, friday the 12th of september, year 2,008 we continued our education about velocity, specifically working on time vs velocity graphs. It was a little tricky at first, but we had plenty of practice and i think most people got it. If not, i suggest talking to Anne. Oh, and QUIZ TUESDAY!

Andrew

I have really specific and hard plans for after college.  I want to go to a small liberal arts school, hopefully in New England but maybe not.  My favorites are Bowdoin, Colby, and Wheaton.  I want to study English there, particularly creative writing.  I hope to spend my junior year abroad at the University of Oxford in England where I’ll learn more about writing (but in the English way, which is very different).  Then I want to graduate from college and go to Oxford again for graduate school, where I’m pretty sure they have a creative writing program.  Hopefully I’ll get to live in England after that, and be a writer.  If writing doesn’t work out I want to be an editor for a book publishing company.

Ari