Class 19.5 Tuesday, 10/23/18

Warm Up:   None

Today: 

  • Finish your rockets and homework.

  • Determine the optimal amount of water for your water rocket, using a  Water rocket simulator such as this one.   If you do use this simulator, don't forget to enter "100p" for pressure.

Online Textbook (OpenStax) Reading: 

 Homework:  Due on Wednesday: 

Class 19 Monday, 10/22/18

Warm Up:   None

Today: 

1)  Watch this video.  Make sure that you adjust the three volume controls: 1) computer volume, 2) YouTube volume, 3) Stereo Receiver volume

 

2) Work on Rockets:

  • In pairs, design and build a water rocket.  There can only be one non-pair group per class.  That one group can be a single person or a group of 3.

  • Each pair gets no more than two bottles.  One bottle is for spare parts, and the other bottle is for the pressure chamber.  The pressure chamber bottle must not be cut into or compromised in any way.  A good rocket will need nice fins near the back, a weight on the front, an aerodynamic design, and radial symmetry (when viewed from the nose).

  • You may want to use a water rocket simulator, like this one [Water rocket simulator -- enter "100p" for pressure.], to determine the optimal "empty mass" of your rocket.   You should definitely determine the optimal amount of water for your rocket (@100psi)

  • Rocket goals and requirements:

    • Goal:  maximum height

    • Flight is straight up and straight down.  No parachutes.

    • No more than 1m of duct tape may be used.

    • You must construct your rocket in such a way that you can disassemble it and recycle all recyclable components (and reuse all reusable components).  Duct tape is not recyclable.

  • Rocket Materials Locations:

    • Bottles go bags in the back of the room.

    • Scissors are kept in one of the teacher desk drawers (left side)

    • Duct tape goes in the top left teacher desk drawer.

    • Store your rocket (and/or rocket parts) in a cabinet beneath a lab table.

    • Trash (bottle labels and ruined duct tape) goes in the trash can

    • Recycling goes in the recycling bin

3) Work on the homework (below)

Online Textbook (OpenStax) Reading: 

Homework:  Due on Wednesday: 

 

Class 18.5 Wednesday, 10/17/18

Warm Up:  

1. How does a water rocket work?

2.  Would a water rocket work better or worse in outer space?  Explain.

Today: 

Online Textbook (OpenStax) Reading: 

Homework: 

Class 18 Tuesday, 10/16/18

Warm Up:   Take a look at the 2-D kinematics data relating to homework completion and test scores.  What do you think?

Means:  68% (A5/6), 84% (A7/8)       Medians: 63% (A5/6), 88% (A7/8)

Today: 

  • Return Tests:  Test corrections for Chapter 3 (2-D Kinematics) are due by 10/31.  For multiple choice questions, you must explain the reasoning behind your answer choice.

  • Check/review homework -- Practice with forces in 1 dimension -- Conceptual questions 3-10.  Problems 1-9. Answers/solutions

  • Notes:  3rd Law, Tension

    • Tension

    • Multibody drill A practice problem

  • Mr. Stapleton will be gone on Monday and Tuesday.  He will leave you some physics problems.

Online Textbook (OpenStax) Reading: 

Homework: 

Class 17.5 Monday, 10/15/18

Warm Up:  

There is a heavy object suspended from the ceiling by a string.  Another segment of the from the same roll of string is hanging from the object.  I am going to pull on the bottom string until one of the two strings breaks.  Which string is going to break first?  Why?

Today: 

Online Textbook (OpenStax) Reading: 

Homework: 

Class 17 Friday, 10/12/18

Warm Up:  

Test Today.  No Warm-up.

Today:  Chapter 3 Test

Online Textbook (OpenStax) Reading: 

Homework: 

  • None
Class 16 Thursday, 10/11/18

Warm Up:  

1.  It is possible to remove a sheet paper from under a dry erase pen without touching or tipping the pen.  How can one do this without tipping the pen?  Why does the pen usually fall? 

2.  1m/s = ____ mph.  For tomorrow's test, memorize this or be able to calculate it based on a known conversion.

Today: 

Online Textbook (OpenStax) Reading: 

Homework: 

  • Prepare for Friday's test.
Class 15.5 Tuesday, 10/10/18

Warm Up:  

No Warm-up

Today: 

  • Projectile Launcher Competition

  • As a group -- Turn-in your sheet with attached graph

Online Textbook (OpenStax) Reading: 

Homework: 

  • Prepare for Friday's test.
Class 15 Tuesday, 10/8/18

Warm Up:  

No Warm-up

Today: 

  • Projectile Launcher Competition

  • As a group -- Turn-in your sheet with attached graph

Online Textbook (OpenStax) Reading: 

Homework: 

  • Prepare for Friday's test.
Class 14.5 Monday, 10/8/18

Warm Up:  

Will the blue hunter hit the monkey?

Today: 

  • Check/review homework:  Problems section of Mr. Pennington's old Chapter 3 Test  Solutions

  • *If you want to adjust Y0 in you spreadsheet, and you used the same formula that I did, you will need to change your formula.  Example

  •  Get contest problems.  No more practice shots.

  • This is what the launcher platforms will look like.

  • Prepare for the contest:

    • Make sure that you have a graph of V0 vs. Launcher Setting

    • Solve the contest problems.

    • Staple the graph to your problem solutions.

  • Coming up:

    • Tomorrow: Projectile contest in the guidance lobby

    • Wednesday: no class

    • Thursday: review? Begin new unit -- Newton's Laws in 1 Dimension

    • Friday:  Chapter 3 Test (2-D Kinematics -- Vector addition, subtraction, and resolution; river problems, projectile motion)

Online Textbook (OpenStax) Reading: 

Homework: 

  • As a Group:  
    • Solve the contest problems.
    • Staple your graph to your solutions.
    • Be ready to shoot right away, tomorrow
Class 14 Friday, 10/5/18

Warm Up:  

A green hunter and a blue hunter point their guns directly at a fake orange monkey and then fire simultaneously.  Just as the two hunters fire their guns, the fake monkey slips and freefalls from the treetop. [You may assume that this takes place in a vacuum on a flat earth.]

1. Where does each hunter's projectile end up, relative to the monkey?  High, low, or in the monkey?

2.  How would the result have been different if the monkey had stayed in position at the top of the tree?

3.  Does the answer to either of these questions depend on the bullet velocities?

Today: 

  • Check some homework solutions to the trajectory problems.

  • Work time:

    • practice shooting at a variety of angles and distances; recalibrate your launcher if you want.  For the contest, you will not need a v0 greater than 10m/s or less than 3m/s.

    • start on the homewok

Online Textbook (OpenStax) Reading: 

Homework: 

Class 13.5 Thursday, 10/4/18

Warm Up:   Can you think of a more precise method of calibrating your launcher?  -- rather than shooting horizontally from a stool?  What does precision mean?

Today: 

Online Textbook (OpenStax) Reading: 

Homework: 

  • Get a working trajectory spreadsheet.  You only have to have one for your your group; you can share copies of it.   See class 13, below, for details.  There are instructional videos on my my YouTube channel.  It should work like this .  A line graph may actually work better than a scatter plot.
  • Use the spreadsheet to complete these launcher project practice problems
Class 13 Wednesday, 10/3/18

Warm Up:  

At the angle shown, can the projectile launcher hit the target?  If not, how should the launcher be adjusted?

Today: 

  • Finish discussing Monday's homework? --  "projectile practice problems 1-4" in Currents and Projectiles -- Notes and Practice (solutions)

  • Continue calibrating launchers.  (Directions for calibrating projectile launchers)  Create a calibration table and a graph.  Check your calibrations by trying to hit targets at a variety of distances.

  • Mini-contest after 30 minutes of calibration time.

  • As a group, begin creating a projectile trajectory simulator (spreadsheet). 

    •  Here is a link to a Spreadsheet Template that you can use.  Given an initial projectile speed and launch angle, your spreadsheet must:

      • Calculate the x and y position of your projectile at incrementally spaced moments during its flight.

      • Provide a graph of y displacement vs x displacement for the entire flight.

    • Use this screenshot to confirm that your spreadsheet works correctly.  Enter the same values in yellow, and see if you get the same results.  Your graph may vary depending on how many data points you include.  You may want to add a trend line. 

    • For videos showing how to create and fine tune the spreadsheet, see the recent videos on my YouTube channel.

Online Textbook (OpenStax) Reading: 

Homework: 

Class 12.5 Tuesday, 10/2/18

Warm Up:  

1.  The pilot of a small plane is navigating by pointing her plane directly southward while maintaining an air speed of 100m/s. If the plane has an actual eastward velocity of 50m/s, what is the velocity of the air that surrounds the plane? 

To eliminate some calculations, you can describe the wind  velocity by providing its two component vectors.

2.  If there were no windshield, and the propeller were momentarily removed, would the pilot feel air blowing from straight ahead or from some other direction?

Today: 

Online Textbook (OpenStax) Reading: 

Homework: 

  • Nothing new.  If you're feeling unsure about your understanding of this unit, go back through the previous assignments listed for classes 9.5-10.5 and try to identify the problems or concepts that are giving you the most trouble.
Class 12 Monday, 10/1/18

Warm Up:   Sketch the component and resultant vectors for the following "river problems."

1.  A paddler travels eastward at a rate of 3m/s.  The paddler's heading is northeastward, and the paddler's speed in still water is 8m/s.  What is the velocity of the water in which the paddler is paddling?

2.  A quadcopter has a velocity of 20m/s westward.  The wind is blowing southward at a rate of 10m/s.  What are the quadcopter's airspeed and heading?

3.  The driver of a golf cart on an aircraft carrier uses a compast to head northward.  The cart's speedometer reads 10mph.  The aircraft carrier's heading is eastward, and it's speed in still water is15mph.  The ocean current is northwestward at a rate of 5mph.  What is the actual velocity (relative to the Earth) of the golf cart?

Today: 

Online Textbook (OpenStax) Reading: 

Homework: 

 

Class 11.5 Friday, 9/28/18

Warm Up:  

1.  How do you enter a formula in a spreadsheet (e.g. Google Sheets, or Excel)?

2.  If you don't know how to do something in a spreadsheet, how can you find out how it's done?

3.  How would you create a spreadsheet like the one on the right?  Given a projectile's initial speed and launch angle, this spreadsheet calculates the x and y positions of the projectile at any given time.

Today: 

Coming up: 

  • Projectile launcher modification, calibration, and siege contest.   Example problem:    Example calibration graph:

Online Textbook (OpenStax) Reading: 

Homework/Deadlines: 

  • Tonight's homework:
    • Complete the first page of Chapter 3 Practice Test   Solutions
    • Use Google Sheets to create a spreadsheet like this one  .  You will have to enter formulas into the blue and green cells.  The purpose of this spreadsheet is to quickly calculate the initial velocity of a horizontally launched projectile.  The data that must be entered (into the yellow cells) in order to perform the calculation are initial height and horizontal distance traveled before hitting the floor.  Use the data in this screenshot to check your formulas. Adjust your share settings to "anyone at ESWD with a link," and paste your link into this form.
  • All corrections for the first test (1-D Kinematics) must be completed and turned in by Thursday, October 11.
  • If you did not get credit for the vector or river problems, you may complete them by Monday for credit.  Otherwise they will simply not count.  Normally, late homework assignments are not scored, but I am making an exception because of my absence.
Class 11 Thursday, 9/27/18

Warm Up :   Two canoe paddlers begin at the starting point in the diagram on the right.  They paddle with a constant water speed.  Paddler A maintains a westward heading while paddler B keeps the canoe pointed at the small island.

1.  What is the difference between water speed and speed?

2.  Which paddler is following a heading?

3.  Describe the shape of the path followed by each paddler.

4.  Now suppose we increase the scale of the problem, remove any current, and provide paddler A with a compass only at the beginning of her journey.  She points her canoe westward, begins traveling in that direction, and maintains her speed in a perfectly straight path.  Assuming that her path is perfectly straight, will she reach the island 1,000 miles away?  Explain.

5.  What does the previous question suggest about the assumptions of river problems in this class?

6.  In this class, river problems will involve three velocities, a) the velocity of a medium (e.g. river water, or moving air) relative to the Earth, b) the speed of an object relative to the medium, and its direction (heading), relative to the Earth, and c) the velocity of the object relative to the Earth.  Which of these three velocities will be the resultant vector in river problems? [It may be easier to think of these as the current's direction, the object's heading, and the object's actual path.]

Today: 

  • Check-in.  See what actually happened while I was gone.

  • Turn-in previous nights' homeworks (vectors and river problems).  You can just turn in the whole packet.  Staple work to the back.

  • Check/review problems 3 and 4 from the Chapter 3 Practice Test   Solutions

  • Questions about the river problems?

  • Kinematics equations for constant velocity and constant acceleration, and when to use them

Coming up: 

  • Projectile launcher modification, calibration, and siege contest.   Example problem:    Example calibration graph:

Online Textbook (OpenStax) Reading: 

Homework: 

Classes 9.5 (Monday, 9/24), 10 (Tuesday, 9/25), and 10.5 (Wednesday, 9/27)

Work through these notes and problem sets.  Please help one another.  Also ask Mr. Chase for help.  If you sign up for my Flex, he is in the same room (C211/212). 

Online Textbook (OpenStax) Reading: 

 
Schedule Item Where to find it Directions Solutions Links Video Links
Monday Drawing and calculating Orthogonal Vectors  Top cubby
2nd column from the right.  It's part of the big handout from last week
  • Check your answers to Friday's homework by looking at the solutions.
  • At a minimum, complete the last orthogonal vector problem.  If you want more practice, do the others.
(Solutions) Video:  Intro to 2-D Kinematics and Vectors

Vector Addition (drawing and calculating orthogonal and non-orthogonal)
Monday Drawing and Calculating Non-Orthogonal Vectors Top cubby.  Part of big handout from last week
  • Same as orthogonal problem directions, above.
(Solutions) See above
Monday night homework Classic River Problem   Top cubby.  Part of big handout from last week
  • Complete the problem.  Try it on your own.  If you need help, look at the solution.
  • On Tuesday, check your work.  Get help from other students if you need it.
Solution  
Tuesday (Full block)  -- and Tuesday night, if necessary Still more river problems #2-5 Top cubby.  Part of big handout from last week
  • Complete river problem #2, then check your answer.  I shared two sets of solutions.  If you don't understand the solutions, watch a video, on the right.
  • Continue working on #3, 4, and 5.  Check each problem as you complete it.
2017 Solutions to Still more river problems -- with tables 
Old solutions (no tables) -- (solutions 2-3) (solutions 4-5)
#5 video  #4 video  #2 and 3 video -- old solutions
Wednesday (split block) Currents and Projectiles -- Notes and Practice Problems 2nd cubby from the top.
  • Complete the notes section of the handout.  You can look at the completed notes on the right, or you can play the video.  If the class chooses, you can play the video using the teacher computer and the projector.
Filled-in notes and solutions Video of Notes from Class
Wednesday (finish at home) Chapter 3 Practice Test 3rd cubby from the top
  • Complete problems #3 and #4 practice test.  There is a video for these problems.
Solutions  Ch3 PTest Conceptual Questions Video   Ch3 PTest Probs 1-2 Video Ch3 PTest Probs 3-4 Video


Class 9 Friday, 9/21/18

Warm Up :  

1.  What are sine, cosine, and tangent?

2.  Find the missing vector magnitudes on the right.

Today: 

  • Mr. Stapleton will be gone on Monday through Wednesday. I will leave problems, solutions, and videos on this website.  There will be paper copies of the problems and questions in the classroom, in the wooden cubbies in the front of C209, 2nd cubby column from the right.
  • Preview of this unit -- What's on the Chapter 3 Test
  • Vector Addition --Head to Tail Method

     

Online Textbook (OpenStax) Reading: 

Homework: 

  • There will not be explicit notes on every aspect of vector addition, but we will practice it.  In lieu of complete notes, refer to the textbook sections.
  • Finish Analytical Vector Addition Practice -- orthogonal and random vector assignments (above)
Class 8.5 Thursday, 9/20/18

Warm Up:  

1.  Suppose the two vectors on the right represent two forces acting on the clam.  In what direction will the clam accelerate?  What will be the magnitude of the net force accelerating the clam in that direction?

2.  The diagram on the right shows a top view of a train car that is moving at a rate of 2m/s.  You are in the car.  In which direction and how fast should you walk in order to have the intended velocity shown on the right.

 Today:

Online Textbook (OpenStax) Reading: 

Homework:

  • Read my comments on your video analysis  (A5/6A7/8) .  If you have a yellow cell, you must redo whatever is yellow.  Otherwise, making corrections is not mandatory.
Class 8 Wednesday, 9/19/18

Warm Up:   No warm-up today

 Today:

  • Test, 1-D Kinematics

Online Textbook (OpenStax) Reading: 

Homework:

  • Read my comments on your video analysis  (A5/6A7/8) .  If you have a yellow cell, you must redo whatever is yellow.  Otherwise, making corrections is not mandatory.
Class 7.5 Tuesday, 9/18/18

Warm Up:

1.  Propose an explanation for why this velocity graph is so scattered looking.

2.  What five variables should you look for in kinematics problems?

Today:

  • I finished reviewing and making comments on the video analyses  (A5/6A7/8) .  If you have a yellow cell, you must redo whatever is yellow.  Otherwise, making corrections is not mandatory.
  • Completion of the video analysis is required, unlike ordinary homework.  If you have not submitted analysis videos and graphs, you may still do it for credit.
  • Check/review 1-D Kinematics Practice Test #2Solutions  and "More Kinematics Problems"  Solutions

Homework:

  • Test tomorrow.  Bring a pencil and a calculator.
Class 7 Monday, 9/17/18

Warm Up:

1. Eliud Kipchoge ran 26.22 miles in a time of 2:01:39.  What was his average Δt, in minutes and seconds, for each mile?

2.  Why is a marathon 26 miles, 385 yards?

3. Take a look at the formulas that you will be given on the test.

Today:

Online Textbook (OpenStax) Reading: 

Homework:

  • Finish  1-D Kinematics Practice Test #2Solutions  and "More Kinematics Problems"  Solutions
  • Test on Wednesday:
    • Format:  2 short answer (4pts total), 14multiple choice (14 points), 1 unit conversion problem (2pts), 5 one-part problems (20pts), 1 extended problem with 6 parts (12 pts).  52 points in all, worth at least 80% of your grade as of Thursday.
    • Topics on the test:  What it can mean to have different combinations acceleration (+,-, or 0) and velocity (+,-, or 0); graphing; free-fall; unit conversion; problems (identifying variables and applying correct formulas), including proper units, showing work for partial credit, formulas for average velocity and acceleration
    • What to study:  notes, homeworks (including Mr. Pennington's old test), practice test.  Video analysis will not be on the test.
Image result for celebratory gunfireClass 6.5 Friday, 9/14/18

Warm Up:

Sometimes people celebrate special occasions by firing guns into the air. 

1.  Is this a dangerous way to celebrate?  Why, or why not?

2. Why don't clouds fall out of the sky?

Calculated terminal velocities of various spheres.

Today:

Online Textbook (OpenStax) Reading: 

Homework:

Class 6 Thursday, 9/13/18

Warm Up:

1.  A race car is traveling counterclockwise around a circular track.  The car's speedometer stays on exactly 100mph the whole time.

Describe what happens to each of the following as the car makes one revolution around the track:  

a)  the car's speed   b) the car's velocity  c) the car's acceleration.

2.  All of the speed calculations in the screenshot on the right (blue) are slightly off, and the last speed calculation (red) is really, really off.  Why?

 

Today:

Coming Up:

  • Friday -- 2nd practice test (includes an extended problem)
  • Monday -- Review 2nd practice test
  • Wednesday -- Chapter 2 Test -- 1-D Kinematics
  • Some day (probably) -- Quiz over video analysis

Online Textbook (OpenStax) Reading: 

Homework:

Class 5.5 Wednesday, 9/12/18

Warm Up:

Match each position vs. time graph with the correct velocity and acceleration graph.

Today:

Coming Up:

  • Thursday -- watch some videos, more practice problems
  • Friday -- 2nd practice test (includes an extended problem)
  • Monday -- Review 2nd practice test
  • Wednesday -- Chapter 2 Test -- 1-D Kinematics
  • Some day (probably) -- Quiz over video analysis

Online Textbook (OpenStax) Reading: 

Homework:

Class 5 Tuesday, 9/11/18

Warm Up:

A ball is launched directly upward from the Earth's surface.  The ball returns to Earth and hits the ground after a time of 10 seconds.  Assuming no air resistance and g≈10m/s2, fill in the values in the diagram on the right. [Though the diagram appears to show horizontal motion, assume that there is none.]

Today:

  • Check/review homework Mr. Pennington's Old 1-D Kinematics Test Answer Key
  • Work time:
    • Mr. Pennington's test -- solve the problems
      • Remember that, on a test, you may receive partial credit for:  Useful Equation(s), correct identificaton of all given variables, math/computation, reasoning, units
    • Finish video analyses

Online Textbook (OpenStax) Reading: 

Homework:

  • Due tomorrow:  Complete the problems section of Mr. Pennington's Old 1-D Kinematics Test Answer Key
  • Video Analysis is due tomorrow -- Complete your row of your class' spreadsheet (A5/6A7/8). 
    • Make sure that everything (videos and spreadsheets) are shared with "anyone with a link."
    • Fix your motion graphs so that they correctly represent the motion from your video.  
Class 4.5 Monday, 9/10/18

Warm Up:

The symbol "g" usually represents the absolute value of the acceleration of gravity near Earth's surface (in the absence of air resistance).  The approximate value of g is 9.8m/s2.

For the sake of simplicity, use g = 10m/s2 to complete the motion graphs for an object with v0 = 20m/s and y0 = 0m.

[Ignore air resistance.]

Today:

  • Brief demo -- how to use formulas in a spreadsheet.
  • Finish individual video analysis work:
    • Choose two videos to analyze.  One must use the stationary camera method (Logger Pro Method), and one must use the moving camera method (Quicktime).
    • Click one of these links to your class spreadsheet -- A5/6A7/8
    • Enter your name on the next open row.   Insert links to your videos into columns C and G.  Enter descriptions of what the video is supposed to demonstrate into columns B and F.

Tomorrow: 

  • Review homework

  • ?

  • Work time: 

    • Extended problem(s)

    • Wrapping up video analysis?

Online Textbook (OpenStax) Reading: 

Homework:

  • Due tomorrow:  Complete the multiple choice section of Mr. Pennington's Old 1-D Kinematics Test Answer Key
  • Video Analysis is Due on Wednesday -- Complete your row of your class' spreadsheet (A5/6A7/8). 
    • Make sure that everything (videos and spreadsheets) are shared with "anyone with a link."
    • Fix your motion graphs so that they correctly represent the motion from your video.  In cases where your video was rotated sideways in Logger Pro, you may use formulas to fix the data or you may resolve the confusion with creative y-axis labeling.  For example, if your video shows a dropped ball, but the video is rotated counter-clockwise, so that the ball seems to accelerate positively to the right, you may label your velocity graph y axis with the following statement "speed in the direction of the ground (meters)."  For objects with diagonal motion, you will need to specify which component of the object's motion is being represented, so your y axis might be labeled "upward speed," "downward speed," "rightward speed," or "leftward speed."  If you want a challenge, you could use formulas to calculate the actual diagonal speed based on the x and y velocities, using the pythagorean theorem.
Class 4 Friday, 9/7/18

Warm Up:

1. For letter a, on the right describe what an object could be doing in order to have both positive velocity and positive acceleration.

2.  Do the same for the rest of the letters.

 

Today:

  • A7/8 -- finish going over #7 and #8 from Wednesday's homework.  Answer Key -- Kinematics Formulas and Practice Problems
  • Demonstation of how to complete video analyses.  Falling object  Rubber Band Car
  • Video Links showing how to analyze videos using both methods -- created last year.
  • Begin analyzing motion videos.
    • Upload Videos to your Google Drive
    • Set your shared settings so that anyone in the district can view the videos.
    • Share the videos with your group, or send them links.
    • Individual Work:
      • Choose two videos to analyze.  One must use the stationary camera method (Logger Pro Method), and one must use the moving camera method (Quicktime).
      • Click one of these links to your class spreadsheet -- A5/6A7/8
      • Enter your name on the next open row.   Insert links to your videos into columns C and G.  Enter descriptions of what the video is supposed to demonstrate into columns B and F.
      • Use the Logger Pro (stationary camera) method first, following the Video Analysis Directions.  You should use Logger Pro first because you probably will not have access to Logger Pro at home.  Quicktime player, on the other hand, is fairly easy and free to download.
      • Analyze another video without using QuickTime (motion along a ruler).  To make your task easier, feel free to copy these spreadsheetsand modify them to meet your needs (Logger Pro method, Quicktime Method).

Online Textbook (OpenStax) Reading: 

Homework:

Class 3.5 Thursday, 9/6/18

Warm Up:

1. How does the Amazing Water and Sound Experiment work?

2.  Answer to yesterday's warm-up#3?.

Today:

Online Textbook (OpenStax) Reading: 

Homework:

Class 3 Wednesday, 9/5/18

Warm Up:

1.  Assuming that the man in the picture is 2m tall, and the frame rate of the camera was 30 frames per second, what were the approximate maximum and minimum speeds of the object?

2.  Based on your answers, do you think the assumption of 30 frames per second was too loww, too high, or about right?

3.  If you could travel in time, and you found yourself in the infinite loop of acceleration changes shown below...  a) what might your velocity and position graphs look like?, and b) would you ever find yourself in the same location as another past self?  If so, show how this could occur.

Today:

Online Textbook (OpenStax) Reading: 

Homework:

Class 2.5 Tuesday, 9/4/18

Warm Up:

A runner sprints exactly 100m, rests for a moment, and then slowly follows the same path back to the starting line.  This entire trip takes 200s.  For the questions below, consider the runner's entire round trip.

1.  What distance did the runner travel?
2.  What was the runner's displacement?
3.  What was the runner's average velocity?
4.  What was the runner's average speed?

Today:

Handouts:

Online Textbook (OpenStax) Reading: 

Homework:

Class 2 Friday, 8/31/18

Warm Up:

Use the velocity vs time graph on the right to sketch the shape of a corresponding position vs time graph.

[Hint: positive velocity corresponds to movement away from a motion sensor.]

Today:

Handouts:

Online Textbook (OpenStax) Reading: 

Homework:

Class 1.5 Thursday, 8/30/18

Warm Up:

For each letter, describe what is happening to the person's speed and direction during the 10 seconds represented on the graph.  

Today:

Handouts:

Online Textbook (OpenStax) Reading: 

Homework:

  • Course expectations signatures.
  • Suggested Reading (see above)
Class 1: Wednesday, 8/29/18

Physics 200: Mr. Stapleton

Warm Up:

Spin one of the "sprotating cylinders" by pressing one end until it squirts out from under your finger.  Try pressing the other end.

When the cylinder is spinning, why do you only see the symbol that you press?

Slow motion

Today:

  • 8 students log in to laptops ASAP 
  • Learn names/pronunciations
  • Enter attendance
  • Student info sheet
  • Mr. Stapleton philosophy, slideshow, etc
  • Briefly go over course expectations, class overview (see last year's site).
  • Motion Matching Activity -- at rink? 
  • ***A5/6 has D lunch.
  • B-Day Split block times (I think) are:
    • B5 -- 1150-12:28
    • B6 -- 12:32-1:10

Handouts:

Online Textbook (OpenStax) Reading: 

Homework:

  • Get your course expectations signed and then return them.
  • Suggested Reading (see above)