12/21

Objective:  SWBAT practice solving problems involving gas laws and thermal expansion.

Warm Up:  Pick up three pages and staple.  Answer question number 1.

12/20

Objective:  SWBAT calculate the thermal expansion of a solid

Warm Up:  Determine the energy given off when 5 kg of water is cooled from 80 oC to -15 oC.

12/19

Objective:  SWBAT understand heat transfer

Warm Up:  Pick up 6 (yes 6!) handouts.

Convert -  36 oC to oF
                 75 oF to oC
                 95 oC to oF and to K

12/15

Objective:  SWBAT review for tomorrow's midterm exam.

Warm Up:  Get out your review packet.
Draw a graph that depicts the potential energy of a pendulum vs. time.  Superimpose over that graph the kinetic energy of the pendulum over time.

12/14

Objective:  SWBAT review for Friday's midterm.

Warm Up:  get out your midterm packet (I gave them out last Friday).  Answer question 1.

12/13

Not much to post this week.
Yesterday we reviewed (while many of you were having group pictures taken).

Today is the Chapter 11 test on Fluids

Wed and Thursday we will review for the midterm.

Friday is the midterm.

Next week we will start Ch 12, so if you are going to be gone, please get the syllabus ahead of time so you can work on the homework assignment.

12/9

Objective:  SWBAT solve problems involving fluids.

Warm Up:  In a car lift, compresses air exerts a force on a piston with a radius of 13 sm.  This pressure is transmitted to a second piston with a diameter of 1.04 m.  What force must the compressed air exert to lift a 1.2 x 10^4 N car?

12/8

Students who were absent yesterday and want 15 more minutes to finish their FRQ's from Tuesday should come today during A lunch to finish them.

Objective:  SWBAT determine the bouyant force on an object experimentally.

Warm Up:  Pick up one lab packet and SILENTLY preread the procedure.

12/07

The day that will live in infamy....

Objective:  SWBAT calculate the volume of water needed to float a boat.

Warm Up:  Pick up your orange reference sheet and equation sheet.  You will have 10 minutes to finish your FRQs from yesterday.

12/5

Objective:  SWBAT prepare for tomorrow's test


Warm Up:  A 0.500kg object is attached to a spring of spring constant 30N/m and

released from rest at t=0 from a position 0.25m from equilibrium.

Find the equation that describes its x‐location as a function of time.

12/2

Objective:  SWBAT understand the factors that affect simple harmonic occillators.

Warm Up:  Turn in your Ch 10 HW.  What is the period of a 1 m long pendulum n the moon?  If I moved the pendulum to the earth, what would I need to do to it so that it would have the same period here on earth?

12/1

Yesterday Dr. Lewin entertained us by deriving the equations for the ocillation of a mass-spring system and for the period of a pendulum before becoming a human pendulum bob.  The links to MIT courseware are to the right in the blog and the video lectures (even though they contain a little calculus) are excellent ways to review before a test or for the AP exam!

Objective:  SWBAT develope and test a method for determining if a spring and a rubber band obeys Hooke's Law.

Warm Up:  Pick up a lab packet.  Do the prelab activity for Part 1.

11/29

It's terrific Tuesday!!

Objective:  SWBAT design a lab that determines the factors that affect the period of a pendulum.

Warm Up:  Define Period (as used in physics).  Determine an appropriate way to measure the period of a pendulum.

11/28

Welcome back from break!

Objective:  SWBAT understand SHM.

Warm Up:  Turn in your Ch 10 outline.  Draw a simple sine wave.  Label:
crest, trough, amplitude and 1 wavelength.

11/21

Objective:  SWBAT prepare for tomorrow's test on rotational motion.

Warm Up:  Pick up your graded papers.
Pick up 3 pages for review and staple.
Answer question #1

11/18

Objective:  SWBAT calculate conservation of rotational momentum problems

Warm Up:  Turn in your chap 9 HW
Get out yesterday's WS.
Two children sit on a 1.5 m long teeter totter that has the pivot point offset, so that it is under the teeter totter 0.8 m from the left side.  The teeter totter's board weighs 20 N.  If the mass of the child on the left edge of the board is 50 kg,  how much does the child on the right side's mass need to be if they are sitting on the edge on the right side of the teeter totter?

11/17

Objective:  SWBAT calculate the moment of inertia of a rotating object.

Warm Up:  Watch the video clip below

This segment from a news program details the training regiment for Dana Carellas, a 15-year old figure skater. In a number of scenes, she performs a spin; as she comes out of the spin, she extends her arms out to the side to slow down. This is a typical problem utilizing the conservation of angular momentum in which the object’s moment of inertia changes so the angular velocity changes as well.

First, consider how her moment of inertia changes. Initially, Dana can be best represented by a spinning cylinder. Assuming her mass to be 50 kg and her “radius” to be 0.2 m, her moment of inertia is:

11/16

Objective:  SWBAT calculate the net torque on a system and determine where to place torques so that a system is in equilibrium.

Warm Up:  Fill in the chart on the board with the correct translational and rotational symbols for the kinematic and dynamic variables.

11/15

Objective:  SWBAT calculate problems invovling rotational kinematics.

Warm Up:  Pick up your graded papers.
3.8 rad = ? rev
22 rpm = ? rad/s
50 degrees = ? rad

11/16

If you missed Friday's test, you must make it up today or Tuesday A lunch!

Objective:  SWBAT understand angular velocity, acceleration, and rotational kinematics.

Warm Up:  Turn in your outline.
Why is it more fun to ride on the outer horse on a merry-go-round?

11/9

Objective:  SWBAT review for tomorrow's test.


Warm Up:  Turn in your Ch 7  HW now.  Can centripetal force do work on an object?

11/8

Objective:  SWBAT begin reviewing for Thursday's test.

Warm Up:  Find your review sheet for Work, Power, and Energy.
A 70 kg diver dives from a board that is 3 m above the water.  He leaves the board going upward at 6 m/s.  (Assume he essentially goes straight up, then comes straight down, missing the board).  What is the divers momentum when he leaves the board?  How high above the board will the diver go?  At what speed will the diver hit the water (assuming no air resistance)?

11/7

Objective:  SWBAT design a landing pad that will safely bring an egg that falls from the ceiling to the floor of the classroom to rest without cracking.

Warm Up:  Get into your teams.  Pre-read your lab.  THEN pick up the materials from Mrs. Heyes.

11/4

Wednesday was Test Day.  Thursday we took notes on Impulse- Momentum Theroem and Conservation of Energy.  This next unit is short but sweet, so stay on top of your studies!

Objective:  SWBAT understand how momentum factors into car accidents and explore ways that car manufacturers have used the Impulse-Momentum Theroem to reduce injuries from car crashes.

Warm Up:  Rhonda (whose mass is 55 kg) is driving 55 mph in her sports car when she crashes into a tree.  She is not wearing her seat belt and therefore the steering wheel stops her in 0.01s.  Compare the force on Rhonda from this crash to a crash in which her seat belt and an air bag stop her in 0.4 s.

11/1

Objective:  SWBAT review for tomorrow's test on work, power and energy.

Warm Up:  Turn in your HW.  Get out yesterday's review sheets.
A 0.5 kg football is thrown at an angle of 50 o with an intial velocity of 8 m/s from a height of 1.5 m.  What is the PEg of the ball at the top of it's trajectory?  What is KE at the top of it's trajectory?  If the ball is caught at the same height that it was thrown, how much work did gravity do on the ball?

10/31

Happy Halloween!

Objective:  SWBAT begin to review for Wednesday's test.

Warm Up:  Pick up one handout and your graded papers.
50,000 J of work were done on a 500 kg roller coaster to bring it to a stop.  How fast was the roller coaster going when the brakes were applied?  

Reminder:  Ch 6 HW is due tomorrow 11/1.

10/28

Objective:  SWBAT calculate problems involving the Law of Conservation of Energy.

Warm Up:  Consider the old fashioned roller coaster on the board.  Calculate the gravitational potential energy at the top of each hill.

10/26

So far, we have done no work in this class.  Time to get to work!!

Objective:  SWBAT calculate the work done on or by an object, as well as experimentally determine the work and power needed to walk and run up stairwell # 3.

Warm Up:  Write a definition of the terms work and power.

Reminder-  All late work and extra credit is due today.

10/24

Objective:  SWBAT review for tomorrow's test on uniform circular motion.

Warm Up:  Pick up your graded papers. 
A  500 kg car drives over the top of a hill that has a radius of 30 m.  What is the maximum speed can the car be going without going airborne at the top of the hill?

10/20

Objective:  SWBAT review forces including centripetal force.

Warm Up:  Turn in your beanie baby lab if you haven't already.
A mass on the end of a string moving in a vertical circle.  Draw free body diagrams for the points on the circle indicated on the white board.

Ch 5 Homework due Monday!

10/19

Objective:  SWBAT experiementally determine the mass of a rubber stopper in uniform circular motion.

Warm Up:  Find two other students to work with (groups no larger than 3!), take a seat and quietly wait for Mrs. Heyes to demonstrate the proper technique for spinning your rubber stopper.

See post below for extra credit opportunity for the 1st Quarter.  It is due no later than Wed. Oct 26.

1st Quarter Extra Credit

Go to http://www.archive.org/details/ThrillDriversChoiceProjectile and view the video.

This 1956 commercial for Chevrolet shows a troupe of men driving regular Chevrolet cars, not the

“souped-up models.” They perform a variety of tricks including, at about 0:34, a jump from one ramp to

another. This is a simple projectile motion problem.  Using the video of the jump:

1)      Estimate the time of flight:

2)      Estimate the launch angle:

3)      Estimate the car’s speed:

4)      Calculate the range:

5)      Calculate y_max:

10/18

Sorry, no blog post yesterday due to the chaotic state the classroom was found in when I walked in.

In short, we took notes on uniform circular motion, centripetal acceleration and centripetal force.

Warm Up:  Pick up graded papers.  Pick up one handout.  If centripetal acceleration = v^2/r and v= 2pir/T, derrive an equation for centripetal acceleration in terms of pi, r, and T.

Closed note quiz on Beanie Baby Lab tomorrow.

10/13

No class yesterday due to PSAT testing.

Objective:  SWBAT review for tomorrow's test on forces.

Warm Up:  Turn in your Chapter 4 homework.
Pick up one review sheet.  Solve problem #1.

10/11/11

Objective:  SWBAT determine how tension acts as a force.

Warm Up:  Pick up your graded papers. 
Several students push a 15 kg block up a  3 m long ramp (25 degrees above the horizontal) with a force of 150 N.  The coefficient of kinetic friction is 0.6.  What is the normal force acting on the block?  What is the force of friction acting on the block?  What is the acceleration of the block?  If the block started at rest, what is it's velocity after it has moved 2 m?

10/7

Objecvtive:  SWBAT identify if a force problem involves equilibrium and how to solve problems when forces are or aren't in equilibrium.

Warm Up:  Get out your WS on Universal Gravitation.  Draw a free body diagram for a water skier who is bing pulled up a ramp just prior to doing a stunt jump.

Reminder:  Getting Pushy Formal Lab is due Tuesday when we get back!

10/6

Objective:  SWBAT calculate the gravitational force between any two objects.

Warm Up:  Name at least three peices of technology that you have used already today.  How do you think your morning was different from a typical moring for Steve Jobs when he was in high school?

10/5

Objective:  SWBAT draw free body diagrams.

Warm Up:  Pick up three handouts (don't staple).  What are the fundamental forces of the universe?

10/4

Objective:  SWBAT design a lab that demonstrates Newton's 2nd Law

Warm Up:  Pick up one handout.

Let's put an imaginary elephant on roller skates and give it a push.  Make a prediction as to what will happen to the accelertation of the elephant if I increase the mass of the elephant keeping the push the same.  What about if I decrease the force of the push on the elephant?

10/3

Wow, it's October already!

Warm Up:  Pick up two sheets and staple.  Find a group of no more than 3 to work with.  Pre-read the lab.  What is the force being applied to the cart?

9/29

Objective:  SWBAT understand Newton's Laws of motion.

Warm Up:  Get out your lab and find your lab partners.  What determines how much inertia an object has?

9/28

Objective:  SWBAT understand that inertia is a property of matter and the role inertia plays in the motion of objects.

Warm Up:  Pick up a lab packet, a lab response sheet and a ruler.  SILENTLY pre-read the front page of the lab packet.

9/26

Objective:  SWBAT review for tomorrow's test on 2 D motion.

Warm Up: Turn in your projectile lab.  What do you do to prepare for a test?

9/23

Objective:  SWBAT solve problems for projectiles moving in 2 dimensions.

Warm UP:  Pick up one handout.  Find your group mates and find a place to work.  Solve Problem number one parts a and b only.

9/21

Objective:  SWBAT experimentally determine the trajectory of a projectile launched at an angle.

Warm Up:  Pick up one lab handout and preread the procedure.

9/20

Objective:  SWBAT describe the motion (verbally and mathematically) of a projectile that is launched at an angle.

Warm Up: Turn in your Marble Lab if finished.  If you kick a soccer ball and it launches at 35o above the horizontal, what is the x direction velocity and the y direction velocity when it is at its highest point?

9/19

Objective:  SWBAT calculation the range and the height at which a projectile is projected with initial horizontal velocity only.

Warm Up:  Turn in Ch 3 outline (and other labs that you may still have).
Pick up one handout.  How can a sailboat with an 80 ft mast  make it under a 65 ft bridge (that isn't a drawbridge and doesn't open in any way)?

9/16

Objective:  SWBAT take a test on 1 D motion.

Warm Up:  Pick up a purple sheet.  Fill out your schedule on it.  Take it home to your parents for next Tuesday's back to school night.

9/15

Objective:  SWBAT review for tomorrow's test.

Warm Up:  Pick up your graded papers.

If a bird takes off and accelerates at a rate of 0.75 m/s2, at what time will the bird's speed reach 4 m/s?

9/14

Objective:  SWBAT review dva graphs and experimentally determine g in room J-208.

Warm Up:  Turn in your Ch 2 problems.  Get out your graphing packet.  Sketch the d vs t, v vs t, and a vs t graphs for your car if you are applying your brakes when approaching a stop sign.

Test Friday on Ch 2.
1-D motion lab due tommorrow.
Flag Pole Lab rewrites due next Monday.

9/13

Objective:  SWBAT solve 1 D motion problems using kinematic equations.

Warm Up:  Get out your graphing packet.  From the graph on the board, determine the displacement of the object after the first 5 seconds.  At what time point(s) is the object stopped?  What is the average acceleration of the object from 6 to 8 seconds?  What is the average acceleration from 6 to 10 seconds?

2nd period- finish 1 D motion lab
Ch 2 HW is due tomorrow!

9/12

Objective:  SWBAT determine the graphical relationship between d, v and a.

Warm Up:  We are meeting in MR. Scopel's room this morning.  Make sure you bring your graphing packet with you.  Let's move!


2nd period- begin 1 D- motion lab in Mrs. Heyes' room.

9/9

Objective:  SWBAT interpret DVA Graphs.

Warm UP:  Pick up the two Graph matching worksheets and staple.  Also pick up the graphing packet. 

A student drives home at 25 m/s then realizes that he left his physics book at school so returns to school at 23 m/s and parks in the same spot as he was in earlier.  What is the students average velocity for this trip?

9/8

Objective:  SWBAT demonstrate their knowledge of conversions, vectors, and the SI system on a test.

Warm Up:  Pick up one scantron.  Get a protractor and ruler.  Geou out your calculator and pencil.  Use the blue side of the scantron.  Subject:  Ch 1 test.

Homework:  Start outlining Ch 2.  Outline due Friday.  Ch 2 Bookwork Due Wed.

9/7

Objective:  SWBAT review for tomorrow's test on Ch 1

Warm Up:  Turn in your Flag Pole Lab.  A student travels in their car using the following velocity vectors:  A point A they begin at 20 m/s at 140o, at point b they change to 25 m/s at 66o and at point C they change to22 m/s at 20o.  At point D they instantaneously stop. 

Draw a diagram of this situation.
Determine the student's average velocity (the resultant) during their travels from point A to point D.


Note: Circumference vs Diameter Lab due tomorrow.
Start outlining Ch 2.  It's due Friday.

http://www.powersof10.com/film

9/7

Objective:  SWBAT add force vectors graphically and mathmatically, and check their answers experimentally using a force table.

Warm Up:  Pick up one lab handout and preread the instructions.

Note:  You will have a test on Thursday on Ch 1 of your book!

9/2

Objective:  SWBAT add vectors graphically and mathematically.

Warm Up:  Get out your homework.  Give a written explaination of how to break a vector down into its x and y components.

9/1

Objective:  SWBAT take a quiz on their AP Summer Assignment and conduct a lab to determine the height of the HHS flagpole.

Warm Up:  Why do meterologists concern themselves with the pressure within a storm system like Hurricane Irene?


Note:  Homework set will be due tomorrow.

It's Fantabulous Friday!!!!!

Hold on Hurricanes....it's time for natural disaster #2 for the first week of school!

Objective:  SWBAT review their AP Summer Assignment

Warm Up:  Pick up your safety test scantron and a copy of the safety test.  Get out a sheet of paper.  Write out the question and the correct answer to each question you got wrong.  Got 100%?  If so, see me for your prize!


Oh, and turn in your forms if you haven't already.
Lockers will be given out today for those who have turned in their Emergency Forms Only.

Homework-  get started on the assignment given on yesterday's syllabus for this unit.  It is due next Wednesday.

8/25

Objective:  SWBAT demonstrate their knowledge of safety on a test AND review graphing techniques

Warm Up:  Hand in your summer assignment if you didn't yesterday.  Hand in your emergency forms
Pick up your summer assignment if you turned it in yesterday.
Also pick up 4 handouts.
Read the safety contract and sign it.

Homework:  Get your forms by your parents.  Start working on Ch 1 Problems.  Problems due on 8/31.