Edible Race Cars Thurs and Friday

Task:   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 video.  This should be done today.

Each group must upload the Logger Pro files (the computer has a blue card taped to it) to their shared drive for Monday.  They must also upload the video file and share with me.
============

Friday, 9/27

Turn in the Map My Run assignment

Fill out this FORM individually


Variable identification practice.   Yesterday, I checked with your group on the worksheets that were available earlier in the week.  On the board by the clock are the examples for three of them.

Today, we're using a book.  (I know, tough to believe) that is on the front bookshelf.   The cover looks something like this.

Task:   Copy the motion formulas on a notecard to be placed into your calculator or binder  (they are listed below and on the board)  

Complete 7 of the 12 problems assigned by the teacher on pp. 82-83   (2, 35, 8, 9, 10, 11, 12, 14, 16, 17, 18)

FOR EACH PROBLEM or PROBLEM PART include

a) the variables  identified (must include 3)

d
v(i)
v(f)
a
t

b) a formula

c) a solution WITH PROPER LABELING (m, m/s, ft/s/s, etc.)


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

Two Days of Hard Work

Ladies and Gentlemen,
**********************************************
Use your Map My Run data to create the following.  

1. A total d-t graph (do not include changes in direction as negative)
2. A total v-t graph that represents #1.
3. A d-t graph that represents motion towards the origin as negative, and motion away from the origin as positive.  
4. A v-t graph that represents #3

When you turn this in, include a 3 paragraph summary of how valuable this app is

a) if used with a smart phone

b) if used as a tracking website

c) if used for PE.

If you were to design an 'app', what other features would you want to include to make it more physics-friendly?

*********************************************

You have been given a suite of tools:

• Logger Pros
• the PHET moving man app
• the patterns

Using those, you need to do the following and understand (the test will look a lot like these)

Work 1

Work 2

On Tuesday, we'll add in formulas based on the variables change in distance, initial velocity, final velocity, change in time, and acceleration

On Wednesday, we'll be building edible race cars

And on Thursday and Friday we will be working on the stop motion videos as a part of your benchmark.

Kinematics activities

GO to http://www.mapmyrun.com and create an account, or use the app on a smartphone.

Make a public route that is at least 1 km (.6 mile long).
Walk the route by Monday and record the time for each leg (it should have at least 4 turns in it).
Share the public route with @mapowell via twitter or email.

Bring a completed diagram to class on MONDAY.
Leg  |  Time (s)

================
Seeing the patterns.

There are seven types of d-t graphs.

a) the object is not moving
b) the object is moving at a constant speed away from the origin
c) the object is moving at a constant speed towards the origin
d) the object is positively accelerating away from the origin
e) the object is negatively accelerating away from the origin
f) the object is positively accelerating towards the origin
g) the object is negatively accelerating towards the origin.


For each, please draw a d-t graph, a dot diagram, a v-t graph, and an a-t graph is if the acceleration is <> 0


================
Create four logger pro graphs using a car and a ramp

A:  The cart rolls down a ramp away from the motion detector

B:  The cart rolls down the ramp towards the motion detector

C: The cart is pushed up the ramp towards the motion detector, and then rolls back down.

D:  The car rolls down the ramp away from the motion detector, and then rolls on a level surface towards a second motion detector.

Monday, 9/16--more graphical analysis

Hi everyone, sadly I am out and ill today.  Boo.  That being said, this is a good time to get everything settled in your head.  If you have not handed in the 2 problems from Friday, you should do so

Last week, we read these three sections.  Refer to them as we think about things today.


http://www.physicsclassroom.com/Class/1DKin/u1l2b.cfm
http://www.physicsclassroom.com/Class/1DKin/u1l3a.cfm
http://www.physicsclassroom.com/Class/1DKin/u1l3b.cfm 

Part 1:  Today, you should be asking a simple question.  What patterns are present?
In short, you should be able to articulate (and hand in, at the end of class) the following:

• if a d-t graph has a horizontal line, what will happen with the v-t graph?
• if a d-t graph has a line with a constant positive slope, what will happen to the v-t graph?
• if a d-t graph has a line with a constant negative slope, what will happen to the v-t graph?
• if a d-t graph has a curve, what will happen to the v-t graph?
• what are the corresponding dot diagrams for each of these above situations?  
• how are dot diagrams used to help us create d-t graphs
• how are dot diagrams used to help us indicate v-t graphs
• what does the dot on a dot diagram represent?

Part 2: Complete and hand in the worksheet that is on my desk.   You will need to draw a d-t graph in the space below the question, and a v-t graph to the side.

Part 3:  Pick 4 of the first 6 problems at http://www.physicsclassroom.com/calcpad/1dkin/problems.cfm and create a d-t graph and a v-t graph for them. (these are due Wednesday)

Part 3:  

Analyzing Your Walk and Move Data

Today, you used a Logger Pro and different objects to try to answer the question.


Can you move with a constant speed?  Can an object move with a constant speed.   You printed a summary sheet with a d-t and a v-t graph.

• On  each printed sheet, place your names and the Item Tested.   
• Explain what the d-t graph tells you.  
• Identify if their is any noise (outlying data that doesn't make sense)
• Does the item tested have constant motion?  Explain your rationale.
• Attach the Logger Pro files for each group to an email.  Send to marciarpowellATgmailDOTcom, and place the names of your group members in the subject line (note if anyone was absent).

Hand this in.

Journal Prompt

After you do FOUR of the simulations at the bottom of the last post, I'd like you to answer these questions in your Google Drive journal. 1. What is the purpose of a d vs. t graph, do you think? 2. How does a dot diagram (sometimes called a ticker tape) compare to a spedometer in a vehicle? 3. What type of tool(s) does a vehicle have to control a pretty constant speed? 4. Why can't an acceleration last forever? Think of the d-t graph. 5. What does a horizontal line on a d-t graph mean. 6. What is your comfort level with d-t graphs? 0 (yechh) to 4 (genius)

Tuesday

Read
http://www.physicsclassroom.com/Class/1DKin/u1l2b.cfm
http://www.physicsclassroom.com/Class/1DKin/u1l3a.cfm
http://www.physicsclassroom.com/Class/1DKin/u1l3b.cfm (sorry, Kaylar, this is where y= mx +b comes in handy)

As you read, write down your questions so we can talk about them tomorrow.


Last half of class--Motion Man Activity

This activity is done in groups of 2 or 3. If there are more than three names on a sheet, it WILL NOT be accepted. 

Click to Run

Click on the activity above.  It will eventually launch a new Java script in a separate window. If you are having trouble, we can help. DO NOT click on the icon repeatedly or you will open up multiple copies of the program.


Print the Moving Man Activity for your group, or make a copy and upload to a shared Google Doc (that would be my preference). This will be handed in tomorrow  Moving Man Activity




====================================DO not start this today-=====================

NOTES and PROCESSING For the following situations, sketch a d-t, v-t, and non-zero a-t graphs that show up in your notes (this activity is modified from here). When you get done with the graphs, send me a picture for your group
A) A man moving from the left of the screen (-8 m) to the house (8m) at a constant 2 m/s (adjust the v-slider).
B) A man moving from 0 to the house at a faster pace than above. C) A man standing still at 4 m.
D) A man moving from 0 to the house at a fast pace then moving back to 0 at a slower pace (slide the man manually).
E) A man moving from 16 m to the tree m at a fast pace of (3 m/s).
F) A man moving from 0 to the house, speeding up as he walks (an acceleration of 1 m/s/s).
G) The man stands still while he talks on his cell phone at the middle of the sidewalk, then walks toward the house at a constant rate trying to get better cell reception. He comes to a sudden stop when the coverage is good (about a meter before the house) and stands still to finish his conversation.
H) The man starts close to the tree, stands still for a little while, then walks toward the house at a constant rate for a while, then slows gradually to a stop.
I) A man wakes up from his nap under the tree and speeds up toward the house. He stops because he is worried that he dropped his keys. He stands still as he searches his pockets for his keys. Once he finds them, he continues calmly to walk toward the house and then slows to a stop as he nears the door.

Motion and Dot Graphs Connection, September 6

First 20 minutes:

Step 1:  Please create your three ticker tapes.   When you get them, please write on the tape WHAT you did to get that type of tape.  Mark position 0 and tape to the whiteboard under the clock.


Step 2:  Ticker walk:  Take a strip that you believe has constant motion and one that has non-constant motion.  Get a whiteboard and divide it in half.  For the first strip, create a sample graph of total distance vs. time, and a sample graph for interval distance vs. time on the bottom half.  In both cases, time is the independent variable.  NOTE:  I said sketches, which means you do not have to measure the distance from dot to dot exactly.  Just estimate.

Step 3:  On a second whiteboard, write a CLAIM regarding your second strip.   The strip itself is EVIDENCE, but you may also want to use a graph or a table.  Here, you must represent the motion of at least half of the entire strip.  Explain your REASONING for your claim.

Second 20 minutes: Reading, class discussion and mathematical models of straight lines

Last half of class--Motion Man Activity

This activity is done in groups of 2 or 3. If there are more than three names on a sheet, it WILL NOT be accepted. 

Click to Run

Click on the activity above.  It will eventually launch a new Java script in a separate window. If you are having trouble, we can help. DO NOT click on the icon repeatedly or you will open up multiple copies of the program.


Print the Moving Man Activity for your group. This will be handed in, along with your packet at the end of the class period today. Moving Man Activity




====================================DO not start this until directed-=====================

NOTES and PROCESSING For the following situations, sketch a d-t, v-t, and non-zero a-t graphs that show up in your notes (this activity is modified from here). When you get done with the graphs, send me a picture for your group
A) A man moving from the left of the screen (-8 m) to the house (8m) at a constant 2 m/s (adjust the v-slider).
B) A man moving from 0 to the house at a faster pace than above. C) A man standing still at 4 m.
D) A man moving from 0 to the house at a fast pace then moving back to 0 at a slower pace (slide the man manually).
E) A man moving from 16 m to the tree m at a fast pace of (3 m/s).
F) A man moving from 0 to the house, speeding up as he walks (an acceleration of 1 m/s/s).
G) The man stands still while he talks on his cell phone at the middle of the sidewalk, then walks toward the house at a constant rate trying to get better cell reception. He comes to a sudden stop when the coverage is good (about a meter before the house) and stands still to finish his conversation.
H) The man starts close to the tree, stands still for a little while, then walks toward the house at a constant rate for a while, then slows gradually to a stop.
I) A man wakes up from his nap under the tree and speeds up toward the house. He stops because he is worried that he dropped his keys. He stands still as he searches his pockets for his keys. Once he finds them, he continues calmly to walk toward the house and then slows to a stop as he nears the door.