Thursday and Friday, 9/29 and 9/30

Thursday:

• Take the test.   The wonderful sub has it on her desk. Spread out so you have room and hand it in when you are done.   Mr. Shaw and Mr. Fessler will write the formulas on the board for you to use, as well as the five possible variables:  d, vi, vf, a, t.   If you have a question, ask those two and they will try to help you.
• Get in teams of 2 or 3 people.   You will be going through Lesson 1   For each lesson, you must draw a picture, and write a one or two sentence summary.   Put your group member names on it and hand in.
• Hand in any missing documents you want graded
• Go through as much of the PHET Vector summary as possible.   Hand in on Thursday and then again on Friday.  This also will be done in groups.   (I realize that you don't all have this background, which is why you need to do the reading first.)
• Text me at 563SIXZEROEIGHT1900 if you need anything.

Friday is a really short day!  Happy homecoming!

Project 2: Runner Guide

Example of a split table

You will have three days to do this project.  No group may be bigger than three people.

Runners need to understand their SPLIT times in order to train effectively.   The idea of a split is to chunk a race and figure out the acceleration and average velocity of time intervals.

We will use a car that is pushed as our model for the runner.  You will create a Logger Pro graph, and figure the acceleration and average velocity of at least 5 intervals.   Based upon the data you receive, you need to develop a recommendation of how a runner that ran this race should change his or her strategy over a period of weeks so they can run on a  a) flat course or b) a course that has a series of 3 hills on it (you can specify which is biggest, medium, and smallest)

You will turn in:
* a logger pro graph
*five intervals of data, showing calculations
*a list of recommendations for the runner


Rubric for Grading:

5 points:   Logger pro graph that shows evidence of acceleration and deceleration over a period of 6 or more seconds.
10 points:  Data intervals, including labeled variables and correctly calculated average velocity and acceleration
10 points:  The meaning of the split intervals
20 points:   List of recommendations for the runner based on a set of conditions you choose (either a) or b))
5 points:  Quality of the presentation/creativity
http://www.runsplit.com/rsa5.htm
http://www.active.com/running/Articles/Why_You_Should_Run_Negative_Splits.htm

Tidying Up the Pieces

At the end of today, 9/16, you should hand in a team binder with the following.

• individual copies of WS4
• the Logger Pro data, with two sets of calculations on acceleration per graph
• a half to one page reflection of how well your edible car worked PLUS a video

If you are done with these, you may do the review sheet handout I have available on my desk.   This will be due on Wednesday of next week and is considered individual HOMEWORK.

Unit 2: Acceleration, Graphs and (finally?!) Formulas

Task 1:   You need to form groups of 3 to 4.   This will be your team for the unit.   In this group, you will assign roles:

• the planner/clearnup organizer
• the techie dude
• the setup person
• the paperwork person

Task 2:  Logger Pro and the world of motion.   Use a ramp and a cart to create a series of d-t and v-t graphs.  For each, you need to print the screen (one copy PER group), and then highlight 4 evenly-spaced time points on the v-t and d-t graphs.  For these, you will note the individual distances, velocities and times using the data chart to the right.   The setups include:

• a motion detector  at the top of a ramp, and a cart traveling down
• a motion detector at the bottom of a ramp and a cart traveling towards (but not hitting) the motion detector
• a motion detector attached to the ceiling and someone creating a vertical jump by standing, crouching, jumping, and then standing again
• a motion detector that is at the top of a ramp and a cart that is pushed up from the bottom, and then allowed to fall again.

Task 3:   Edible Race Cars.   Each member of your group must construct an entirely edible race car (except for 2 bamboo skewers, which may be used in any way desired).   The car will travel down a a ramp that has a motion detector at the top and must travel for 1 m.  Create a side view video of what is happening for each person using the Flip.

Task 4:   Copy the motion formulas on a notecard to be placed into your calculator or binder.    You must complete Worksheet 4 individually using both graphs AND formulas.

d = v(i)t + 1/2at^2
d = t * [v(i) + v(f)] /2 

v(f) = v(i) + at

v(f)^2 = v(i)^2 + 2ad

Finishing Projects

This writeup IS the majority of your first test (you will have ONE graphing question tomorrow) and is worth 40 points.   Your writeup can be a blog post to me, a Google Doc, a hand-written note, or a mind-map.   It must be a unique document from anyone else's in the room.   I realize your are sharing data but your opinions, your ideas, and your understandings must be articulated.

The rubric will be articulated in class, and then posted to this blog.

Use your data gathered to answer the question:  Which is better, hand-animated or digitally-animated cartooning?  Answer for each of the following four factors:

• constant horizontal motion
• constant vertical motion
• changing horizontal motion
• appearance and quality of the cartoon

2. Explain how technology was used in this project, including:

•  file types, including avi, mpg, mov, mp4,flv etc
• codecs, and why they matter
• the difference between rendered videos and video projects
• how to use and install a screen capture utility
• how to use Windows Movie Maker, Uploading features, and digital video

3.  Explain whether your data better reflects the laws of physics from your daily living or the laws of Cartoon physics, shown below.

Cartoon Law I

Any body suspended in space will remain in space until made aware of its situation. Daffy Duck steps off a cliff, expecting further pastureland. He loiters in midair, soliloquizing flippantly, until he chances to look down. At this point, the familiar principle of 32 feet per second per second takes over.

Cartoon Law II

Any body in motion will tend to remain in motion until solid matter intervenes suddenly. Whether shot from a cannon or in hot pursuit on foot, cartoon characters are so absolute in their momentum that only a telephone pole or an outsize boulder retards their forward motion absolutely. Sir Isaac Newton called this sudden termination of motion the stooge's surcease.

Cartoon Law III

Any body passing through solid matter will leave a perforation conforming to its perimeter. Also called the silhouette of passage, this phenomenon is the speciality of victims of directed-pressure explosions and of reckless cowards who are so eager to escape that they exit directly through the wall of a house, leaving a cookie-cutout-perfect hole. The threat of skunks or matrimony often catalyzes this reaction.

Cartoon Law IV

The time required for an object to fall twenty stories is greater than or equal to the time it takes for whoever knocked it off the ledge to spiral down twenty flights to attempt to capture it unbroken. Such an object is inevitably priceless, the attempt to capture it inevitably unsuccessful.

Cartoon Law V

All principles of gravity are negated by fear. Psychic forces are sufficient in most bodies for a shock to propel them directly away from the earth's surface. A spooky noise or an adversary's signature sound will induce motion upward, usually to the cradle of a chandelier, a treetop, or the crest of a flagpole. The feet of a character who is running or the wheels of a speeding auto need never touch the ground, especially when in flight.

Cartoon Law VI

As speed increases, objects can be in several places at once. This is particularly true of tooth-and-claw fights, in which a character's head may be glimpsed emerging from the cloud of altercation at several places simultaneously. This effect is common as well among bodies that are spinning or being throttled.
A wacky character has the option of self-replication only at manic high speeds and may ricochet off walls to achieve the velocity required.

Cartoon Law VII

Certain bodies can pass through solid walls painted to resemble tunnel entrances; others cannot. This trompe l'oeil inconsistency has baffled generations, but at least it is known that whoever paints an entrance on a wall's surface to trick an opponent will be unable to pursue him into this theoretical space.
The painter is flattened against the wall when he attempts to follow into the painting. This is ultimately a problem of art, not of science.

Cartoon Law VIII

Any violent rearrangement of feline matter is impermanent. Cartoon cats possess even more deaths than the traditional nine lives might comfortably afford. They can be decimated, spliced, splayed, accordion-pleated, spindled, or disassembled, but they cannot be destroyed. After a few moments of blinking self pity, they reinflate, elongate, snap back, or solidify.

Corollary:

A cat will assume the shape of its container.

Cartoon Law IX

Everything falls faster than an anvil.

Cartoon Law X

For every vengeance there is an equal and opposite revengeance. This is the one law of animated cartoon motion that also applies to the physical world at large. For that reason, we need the relief of watching it happen to a duck instead.

Cartoon Law Amendment A

A sharp object will always propel a character upward. When poked (usually in the buttocks) with a sharp object (usually a pin), a character will defy gravity by shooting straight up, with great velocity.

Cartoon Law Amendment B

The laws of object permanence are nullified for "cool" characters. Characters who are intended to be "cool" can make previously nonexistent objects appear from behind their backs at will. For instance, the Road Runner can materialize signs to express himself without speaking.

Cartoon Law Amendment C

Explosive weapons cannot cause fatal injuries. They merely turn characters temporarily black and smokey.

Cartoon Law Amendment D

Gravity is transmitted by slow-moving waves of large wavelengths. Their operation can be wittnessed by observing the behavior of a canine suspended over a large vertical drop. Its feet will begin to fall first, causing its legs to stretch. As the wave reaches its torso, that part will begin to fall, causing the neck to strech. As the head begins to fall, tension is released and the canine will resume its regular proportions until such time as it strikes the ground.