ORANGE: Homework Assignment is given RED: Assignment due in the box or for a stamp GREEN: Something going on at lunch PURPLE: Something going on at night BLUE: a link to what we watched
WHAT WILL HAPPEN THIS WEEK:
Mon (10/17) —
New seats!
Stamps from last week / Meet Table 1!
BOW
A look at the next two weeks
Joke Monday
Slide Show
Hand out Sheet 2.6 Packet 2 Readings
Hand out Sheet 2.7 Beautiful Patterns
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Tues (10/18) —
75pt Quiz 2 Handed out
FIRST ROCKETRY SESSION
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Wed (10/19)—
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Thur(10/20) —
LUNCH 75pt QUIZ 2 HELP SESSION
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Fri (10/21)
75pt Quiz 2 Due at 5:00PM
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WHAT SHOULD HAPPEN NEXT WEEK:
Mon (10/24) —
New seats!
Stamps from last week / Meet Table 1!
BOW
Joke Monday
SlideShow
Sheet 2.6 Packet 2 Readings Due at 5:00PM
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Tues (10/25) —
ROCKETRY SESSION
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Wed (10/26)—
Zachary Presents Quantum Physics 12:15 – 12:30
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Thur(10/27)
Guest Speaker — Joel Olson will present GO!
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Fri (10/28)
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PICS FROM LAST WEEK:
Will add captions later this weekend.


Halloween’s coming


Make sure you write out and answer the four questions. Easy credits.


Physics pheeders for our first Feast and Film. The big one is coming up 11/11. Our preThanksgiving feast. Mmmmmm . . . I can taste that green bean casserole already.


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You have to have your finger walking done by WEDNESDAY, Oct 19th at 5:00PM.


The greatest TeacherStudentTeacherStudentTeacherStudent combo.


He started it all.


The three amigos.


Aristotle thought of the world as being made up of these four elements.


The first periodic table!


Ah . . . those were the days.


Enter Leonardo Da Vanci


He was one of the first people to consider gravitational acceleration since he wanted to fly.



Da Vinci– An amazing engineer


Look at the detail!


This would have made a heck of a milittary weapon. Not sure if anyone actually built it.


Nice complex pulley system for the early 1500’s


BLown away by the detail


A helicopter of sorts.


He was into cadavers


This cadaver must have not smelled to good.


He wanted to jump off this nice building


The Leaning Tower on OU campus!


I’d get this tat. Maybe after I retire.


Enter Copernicus. BEcame a hero on his death bed in 1543


Copernicus


Copernicus is in a few different video games.


Giordano Bruno was the first martyr for science.


He was burned alive by the Roman Inquisition in 1600 for various reasons. One of those was his undying devotion to the Copernican Model of the Heliocentric (suncentered) universe.


Now to 1604 and Galileo starts to attempt to prove that Aristotle was wrong.


Watch how you make you letters in Physics.


We recreate Galileo’s original inclined plane diluting gravity lab.


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. . . “the three cups!!”


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One of the results of the lab


Galileo used bells, We used students looking down holes.


These are the possibilities for kinematic relationships.


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Our results from our inclined plane lab.


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Never connect dots in physics.


Galileo did a lot of amazing drawings of the “mountains” on the moon.


Galileo is a much better artist than I am.


The Campanile Bell tower of SaintMark in Venice Italy. It is where Galileo used his telescope.


Galileo finally upset the church and state enough that he had to recant. “E pur si muove” was what he muttered under his breath as he sat back down. “And still it moves”.


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Galileo’s finger is on display in Florence. That’s his middle finger by the way.


NHS Physics girls get the Study Zombie Scholarship at the ACT Math Review last week.


We talked about how Earth got its moon.


Orpheus slammed into us early on in the Earth development. We had a ring around the Earth for a time (like Saturn), then it eventually it coalesced into TWO moons, then eventually they came together to form ONE big moon.


The collision also gave us our 23.5° tilt. Thanks for that one Orpheus. Now we get to have four seasons a year due to the suns varying angle on our northern hemisphere.


Some of our secant slopes (average interval velocities)


Stegosaurus tail shows the increasing average velocities (with a 1 second interval). These are secant lines, but the combination of the 9 secant line slopes gives a better feel for the increasing velocity as the ball rolls down the ramp.


This is my best guess for the tangent slope at the end of the graph (the 9 second mark). Looks like I am getting 7.5m/s.


This is the basics of what it is to eventually take the derivative. Your change in time that you are measuring over. The closer the ∆t gets to zero, the closer the velocity gets to instantaneous.


The smaller those ∆ts become, the closer the secant line gets to the tangent line.


This was my attempt at showing the need for a high sample rate if you are going to get a real feel for what is going on with the data. If you sample this cosine wave every four seconds, you would think it was a straight line. You would have to sample it every 1 second to get the correct notion that it is a cosine wave. It is the same reason we are reducing the ∆t from 9 seconds down to a ∆t of 1 second. It gives us a much better feel for the changing velocity.


For parabolas, we can fool the algebra into becoming calculus if we look at the midtime (NOT midpoint) of any particular segment. At the midtime, the illusive slope of tangent line comes into focus for just that microsecond because it equals the slope of the secant line.


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m/s/s is the same thing mathematically as m/s^2 . . . but it is MORE correct conceptually to write it m/s/s because acceleration is measuring the change in velocity (m/s) over a certain number of seconds (s). I suppose the best way to write it would be (m/s)/s but no one does that. hmmm . . . maybe they should!?!


Some answers on the back of 2.4


Using the tangent slope = secant slope at the mid time, we can collapse each step down to an instantaneous point velocity occurring at the midtime.



I guess you get the message . . .


Big Picture. Know this very well.


One of the classes set of data from the ball rolling down the ramp at the stadium.


Plotting a classes data from the ball rolling down the big ramp.


A particular student’s data when we used to roll the ball down a different handicap ramp.


Here is the data from another class


This was from another year, but you can see how the trio was formed.


We now have all three equations necessary to derive the three Orange Kinematic Equations.


Jerk is from a quartet (we’ll discuss that later). Snap is from a quintet. More on that much later.



Graphing the ball rolling up and down the ramp. We’ll talk about this some more this week.


At half tau, the ball reaches the apex.


Here is a list of AP students that will help you for FREE!


Botball team’s scoring for thier fall preseason tournament.


Funny and sad at the same time.
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