Section

  • WELCOME TO PHYSICS AT ISM.  I'M GLAD YOU ARE TAKING THIS COURSE.
    You are reading our official class website.  This is THE PLACE for my communication to you in this course.  
    I expect you to look at it at least once a week to see assignments, updates, reminders, and notices.  Every Sunday night I add the following week.
    This site is not locked, so your parents and guardians are encouraged to use it and see what you are doing.  Please give them the link.
    You should always check here before you start your HW assignment, and you can subscribe so you'll get an email when I update it.
    I'll also post advice, clues, cartoons, current events, and fashion advice.
    Physics can explain so much, such as could you really put a passenger train through a loop-the-loop as shown here .  
    The answer is here: http://what-if.xkcd.com/43/

    Check out these videos:  Do you want to help fly another stratospheric balloon this year?
       
      
  • I hope you saw the big eclipse one week ago!

    This is the first week in the course webpage for Physics at ISM!

    I use a blog format, so each week I'll add a new entry with assignments and information.  YOU MUST LOOK HERE AT LEAST EACH WEEK.

    I UPDATE THIS SITE ON SUNDAY NIGHT, USUALLY.

    HW due  (If any assignment isn't clear then you have the responsibility to clarify and/or correct.  Telling me you didn't understand the assignment when it is due WILL NOT BE AN ACCEPTED EXCUSE.)

    • due Tue: write name on edge of your text in dark marker--show me (yes, you must always bring your text to class)
    • due Wed: read through section 1-5.   Turn in a plot of altitude vs. time for this launch  [if you can't read this youtube video, then go to https://serc.carleton.edu/dmvideos/players/mars_space_labo.html?hide_banner=true  ]
    • due Friday: Explain, as best you can, the physical phenomena happening during the ping pong cannon launch and the short flight and collision of the ball.
    • HW due next Tuesday: 1, read p xviii, read through 1:1-7: web: do physlet below, print one page showing physlet.
      • problems to hand in: chapter 1: Q7; P 8, 9, 12, 14, 15, 19  (P = problem, Q = question)
      • also due Tuesday: show plot due Wednesday using Excel for all calculations and show a fit of the data points, with the equation of the fit.

    We will use many physlets, which are "physics applets". They are cool.  Here's the first one assigned for next monday.

    special assignment: one-on-one with Dr. F-- come see me by 5 sept -- I need 5 min to ask a few questions and get to know you

    Week 1 Points:  (this is a rough list of what I expect you to learn in a week.)

    • know how to access all class information and how the class will work
    • be able to distinguish doing science from learning about science
    • Differentiate dogma from observation
    • Know the standard units in the SI system and how big they are
    • Know and show how to use the fishbone method of conversions

    How scientists think.......

  • NOTE: if you miss completing some HW, you need to do it for the next class.  

    special assignment: one-on-one with Dr. F-- come see me by 8 sept -- I need 5 min to ask a few questions and get to know you

    HW due Tuesday:

    • HW due next Tuesday: 1, read p xviii, read through 1:1-7: web: do physlet below, print one page showing physlet.
      • problems to hand in: chapter 1: Q7; P 8, 9, 12, 14, 15, 19  (P = problem, Q = question)
      • also due Tuesday: show plot due Wednesday using Excel for all calculations and show a fit of the data points, with the equation of the fit.

    We will use many physlets, which are "physics applets". They are cool.

    HW due Wednesday: Complete both sides of worksheet Sig Figs Practice.  Also, use the inside front cover of your text to calculate: density of moon, density of earth, density of sun; report as kg/m3.  Finally, do these 6 calculations and manage sig figs.  1.   5443002      2.  π + 3    3.   π / 3     4.   π / 3.00000

    5.    1.8x105    x   4554000      6.  0.004533 + 0.2799 + 20 + 4500

    HW friday: 1: p-1, 2, 13, 17, 21, 45;   Also, find the file "website assignment" in FILES and do that for today.

    HW new for next Monday:  chapter 1: Q-3, 4; P-3, 4, 5, 23, 43; measure your bedroom, report volume in SI units, sig figs 

    Points for this week:

    • show ability to solve problems with units and Conversions
    • Know which numbers of inside front cover to memorize
    • Demonstrate significant figures and their use
    • Understand science, what is physics, and how we were all experimentalists
    • Know the use of “measurement”, “precision”, “accuracy” in science

    Dimensions

    If you see these stick people then I'm using comics from xkcd.com.  He studied physics and worked at NASA before making the world of science and engineering and math funny and poignant for us.

  • HW for Monday:  chapter 1: Q-3, 4; P-3, 4, 5, 23, 43; measure your bedroom, report volume in SI units, sig figs 

    Quiz Tuesday: scientific notation, sig figs, and a simple calculation. 
            and in class we will measure the thickness of paper

    HW due Wed:  chapter 1: COQ (chapter opening questions) 1-2 (see page 1).  MCQ (MisConceptual Questions) 1,3,5,6

    HW due Friday: 2: COQ; Q 1-9; P 1,2,3,4,5,9,17   

    NOTE: we are now done with chapter 1 in class, although you need to keep up practice with sig figs.  The slides from class are posted above under Powerpoint .....  You can use them to study and review, or to relive those great times we all had in room 309.

    HW due next Monday: chapter 2: Q 10, 11, 15; P 23, 25, 27, 61, 62.       Also for this physlet, http://phet.colorado.edu/en/simulation/moving-man I want you to try many cases of acceleration.  Set up a condition where the man moves with negative velocity but positive acceleration, and print that condition of the physlet.

    1. Points: Velocity: average and instantaneous
    2. Show that x, v, t in kinematics work for any, including final xf, vf, and tf
    3. Acceleration, average and instantaneous
    4. Understand kinematic equations for Motion at constant acceleration
    5. Be able to plot x, v, and a vs. t for simple 1-D motion
    6. Demonstrate the solution technique for kinematic problems 

  • Warning: this is a critical period for this course. The new concepts such as graphing and defining a problem that we are starting will be used all year. Do NOT fall behind in chapter 2 or 3. If you are not following the material in class or the problems, please come see me!

    I have open hours posted, I'm here after school, and we have Physics Study Group on Tuesday 5th.   Stop by and see me.

    HW due Monday: chapter 2: Q 10, 11, 15; P 23, 25, 61, 62.       Also for this physlet, http://phet.colorado.edu/en/simulation/moving-man I want you to try many cases of acceleration.  Set up a condition where the man moves with negative velocity but positive acceleration, and print that condition of the physlet.

    Tuesday:  2: Q 12, 13;  MCQ 4, 6, 9;

    HW due Wednesday:  2: P: 6, 11, 26, 27, 31, 39

    HW due Friday: retreat

    HW due next Monday:  2: P- 7, 41, 45, 55,  69, 71,be able to draw the first 2 motion graphs (use Moving Man on PHET for help)

    next week: bowling ball lab--kinematics

     Points:

    • Demonstrate memorization of kinematic equations
    • Demonstrate use of kinematics in freefall problems
    • Show memorization of sketch/list/choose method
    • Show memorization of symbolic first, then numbers
    • Demonstrate ability to draw 6 basic graphs of x,v,a vs. t as handout
    • Add “avoided variable” list to kinematics table in the text

    remember how we talked about how narrow the human experience is....check this out for a sense of perspective.

  • NOTE THAT CLASS SLIDES ARE NOW POSTED ABOVE IN A FOLDER.

    HW due Monday:  2: P- 7, 45, 55,  69, 71,  

    HW due Tuesday: Do this practice problem.  It would be worth 20 points on the exam. 
    Find the final velocity of a rock that falls 25m for each case below;  for each part, solve first in symbolic form, then plug in the numbers.

    • a. if the initial velocity is zero.
    • b. if the initial velocity is +5.0 m/s. It is thrown up into the air.
    • c. if the initial velocity is -5.0 m/s. It is thrown down.
    • d. comment on the answer for b and c. they should be the same. why.?

    Be able to draw all 6 motion graphs.  (use Moving Man on PHET for help)  

    HW due Wednesday: complete the practice exam which I will hand out on Tuesday, and also is in files at top if you want to start early.

    HW due Friday: Exam 1 in class.  Bring your calculator.

    HW due next Monday: we start chapter 3.  read 3:1-5, do 3: COQ; Q:1-4 P:1,3  

    You should be reading chapter 3 and have the first 4 sections reviewed before class on monday.   Turn in chapter 3: Q 5-8, P 2,4 and use this physlet to show addition of vectors;  http://phet.colorado.edu/sims/vector-addition/vector-addition_en.html  

    Also, start to play with the projectile motion PHET, although you don't need to print anything.  http://phet.colorado.edu/en/simulation/projectile-motion

    points:

    • Show list of into to be written on the exam: kinematic eqns, steps to solve, conversion factors
    • Demonstrate memorization of kinematic equations
    • Demonstrate use of kinematics in freefall problems
    • Show memorization of sketch/list/choose method
    • Show memorization of symbolic first, then numbers
    • Demonstrate ability to draw 6 basic graphs of x,v,a vs. t as handout
    • Learn how vectors work

    VECTORS IN DAILY LIFE......... 

  • HW due Monday:  HW due next Monday: we start chapter 3.  read 3:1-5, do 3: COQ; Q:1-4 P:1,3     

    due Tuesday:   Calculate velocity for the bowling ball from Monday and then calculate acceleration on the ramp.  We will compare your numbers to Loggerpro GoMotion data.

    You should be reading chapter 3 and have the first 4 sections reviewed before class on Tuesday.   

    due Wednesday :  HW is chapter 3: Q 5-8, P 2,4    We will demonstrate friction of falling objects.

    HW due Friday:   3: MCQ 1, 2, 3, 4, 5, 6. and play with this physlet to show addition of vectors;  http://phet.colorado.edu/sims/vector-addition/vector-addition_en.html 

    HW due next Monday:    3: Q-10, 17, 18; P-5, 7, 9,11  show, using this physlet, what angle gives the maximum range for a given firing cannon.   http://phet.colorado.edu/en/simulation/projectile-motion .

               In class we will perform the lab "projectile motion of a ball".    Your assignment is to read and know the lab before class.

    points:

    1. you will start solving projectile motion problems this week.
    2. know what a vector is
    3. demonstrate how to add vectors graphically
    4. demonstrate how to resolve a vector into its components
    5. show how to add vectors by components and find the resultant vector
    6. demonstrate how to do projectile motion on the level
  • to get perspective, and to remember that the physics we are learning applies to all this..... ....

    HW due Monday:   In class we will perform the lab "projectile motion of a ball".    Your assignment is to read and know the lab before class. 
    3: Q-10, 17, 18; P-5, 7, 9,11;  show, using this physlet, what angle gives the maximum range for a given velocity of cannon.   http://phet.colorado.edu/en/simulation/projectile-motion 

    HW due Tuesday:    none

    HW due Wednesday:  3: Q-11, 20, P-17, 19, 21.   

     HW due Friday: P- 20, 23, 39, 55, 59.   (2 hints for #23:  (sinX)(cosX) = 1/2 sin(2X), and sin(2X) = sin(180-2X)) 

    HW due next Monday: 3: MCQ 7-12; p- 18, 23 (do this problem experimentally at home; bring a picture to prove you did), write the list of classic problems for chapter 3 in your notebook.

     Points: this is the week you master projectile motion

    • demonstrate how to do projectile motion on the level
    • demonstrate how to do projectile motion off the cliff
    • demonstrate how to do projectile motion up off the cliff
    • demonstrate how to do projectile motion down off the cliff

  • This section

    to continue our journey, this app includes the jouney to the smallest places http://htwins.net/scale2/  

    Lab update: the video files are located in the J drive and in FILES.  I moved the due date to 27 October.  A scaffold of your report can be found in FILES.  You are free to use this.

    HW due Monday: 3: MCQ 7-12; p- 18, 23 (do this problem experimentally at home; bring a picture to prove you did), write the list of classic problems for chapter 3 in your notebook  I'll review HW from friday P- 20, 23, 39, 55, 59.  (hints for #23:  (sinX)(cosX) = 1/2 sin(2X), and sin(2X) = sin(180-2X)) 

    Due Tuesday: before class, have in your possession all the distance data for each run (steel or glass) of lab 2 in a table with your name on it.  Bring that and show me.   there will be a quiz on one of the first two classic problems in chapter 3 (cannon on the level or car off a cliff)

    Also Due Tuesday:   in this video, a car is pushed into the river from 18 stories.  I timed the fall at 3.2s.   I estimate that the car fell 120 feet horizontally away from the building (the range).  Using your physics, calculate the height of the fall and the horizontal velocity as it left the building.  Report in SI units and in mph (miles per hour).  

    Wednesday: look at the PHET cannon launch again, and find two different angles of the launch that give the same Range.  Write down both angles and bring that to class.  https://phet.colorado.edu/sims/projectile-motion/projectile-motion_en.html .  

    Due Friday: CONFERENCES

    For next Monday, show me that you have done the loggerpro analysis for the launch velocity of your steel ball off the ramp.  The videos are posted in the J:drive under our class (and also in FILES above, but you'll have to download them from the website before you can import them to Loggerpro).  If you plan to do the analysis at home, you will need to transport the data to your home via email or a USB-drive or from the website.  You should plan on 30 minutes for this work the first time. Look at Using Loggerpro On Videos under Physics Tools for step by step instructions.  Also use Help in Loggerpro.  You are in the digital generation, so i'm confident that you can figure it out.

    due Next Tuesday: Read sections 4-1 through 4-4; 4:COQ 1; Q-1,2,3,4,5 and: Q- 5, 8; P-1   and    is a nice ESPN analysis of high jump.  The jumping jumper jumps 93 inches, but his center of mass we'll assume goes up to 87 inches.  Assume he lands on the same level (even though he really lands on the tall pad).  How long is he in the air?  I estimate that his forward travel, the Range, is 72 inches.   So what is his vx at takeoff?  what is the angle θ of his launch?

    points this week.
    Be able to write the steps for solving projectile problems.
    Know the requirements for completing a lab report
    Know Newton's first and second laws of motion
    Know that force is a push or a pull