DAY 79
Need to add:
Review Power Lab
Review HW
- to the lab doc:
- hypothesis
- procedure
- include procedure for analyzing data
- materials
- connect to demo with skateboard (W/U?)
- add a goal to use sheets to analyze data
- decide on timeline - post timeline in classwork section
Hello Student,
The two and five year old both have fevers, so I'm home taking care of them. Have a productive day, and Remind message me with any questions. This is an independent lab, but you are more than welcome to get help from each other. No phones.
See you Friday,
Mr. Alexander
#GOALS: SWBAT...
1. Calculate velocity using a "ticker-tape" (aka "dot") model
2. Read and understand the tutorial
3. Explain how the total momentum before a collision relates to the total momentum after a collision.
WARM-UP (4minutes)
Cart A: 0.5 kg physics cart loaded with one 0.5 kg brick and moving with a speed of 2.0 m/s.
Cart B 0.5 kg physics cart loaded with three 0.5 kg bricks moving with a speed of 2.0 m/s
CLASSWORK
079A: The Cart and the Brick Interactive Lab
1. Today you'll explore two collisions, and collect data to show that momentum is, or is not, conserved. This is your first lab of the semester :)
2. Don't start the simulator yet. Read the instructions here: (it is CRITICAL that you look at the tutorial for how to calculate velocity) https://www.physicsclassroom.com/getattachment/Physics-Interactives/Momentum-and-Collisions/The-Cart-and-the-Brick/The-Cart-and-the-Brick-Exercise-1/CartAndBrick.pdf?ext=.pdf ,
3. Don't start the simulator yet. Complete the Background, Purpose, and Procedure sections first.
4. Complete the lab/fill in the data table by using the interactive simulator here: https://www.physicsclassroom.com/Physics-Interactives/Momentum-and-Collisions/The-Cart-and-the-Brick/The-Cart-and-the-Brick-Interactive
Stuck? Here are two videos to help you through the process.
Measuring displacement and time
5. Copy the completed data tables from Sheets to your Google Doc
6. Complete the conclusion, and any remaining steps.
This is your first lab grade.
Due Tuesday 11:59pm
LEARNING AT HOME (HW)
1. Complete 079A
Stuck? Here are two videos to help you through the process.
Measuring displacement and time
Use the remind app for any further questions...
2. Complete the Knowledge Inventory for 76A
3. Notebook check next Friday
WARM-UP:
1. You'll be measuring the initial (close) and final (far) sides of each fringe. Why not just measure the middle of the fringe?
2. How do we find the average distance of each fringe from the central point?
CLASSWORK:
#078B continued: "How Wide is your Hair?" Lab
LINK Read (skip #11). Also note that to save time, steps 1-4 will be different, as we will be mounting the hair directly to the front of the laser.
Copy the data table from pg 7 into your notebook
Materials: Ruler, strand of hair, tape, piece of paper, laser
Discuss safety:
List three safety concerns:
To collect data, you'll need the laser on for an extended period of time. Should you tape the power button on? Why/Why not?
Lasers are fragile. Describe how you can handle them to keep them functioning.
Practice time:
For successful data collection, you'll need to...
...mount the hair to the front of the laser. We will practice that.
...move your table or chair so that the distance between the hair and the target (paper on the wall) is less than or equal to one meter. We will practice that as well.
If you can get both of the above correct, I'll initial your data chart, and you'll be ready to begin the data collection portion of the lab.
Data Analysis.
You'll be measuring the initial (close) and final (far) sides of each fringe. Why not just measure the middle of the fringe?
How do we find the average distance of each fringe from the central point?
Today we will collect data, and analyze the data you collect
HOMEWORK
Labs Due Friday
Tomorrow we will start our unit on Electricity - there will be a video and questions here by the end of the school day, due tomorrow.
Static Electricity: Watch the video here: https://ed.ted.com/lessons/the-science-of-static-electricity-anuradha-bhagwat#watch
While watching, on your own sheet of paper, answer the 7 "Think" questions listed in the Think section of the website (you can also click here (LINK) for the questions
1. Today you'll explore two collisions, and collect data to show that momentum is, or is not, conserved.
2. Don't start the simulator yet. Read the instructions linked in the lab: (it is CRITICAL that you look at the tutorial for how to calculate velocity)
3. Don't start the simulator yet. Complete the Background, Purpose, and Procedure sections first.
4. Complete the lab/fill in the data table by using the interactive simulator here: https://www.physicsclassroom.com/Physics-Interactives/Momentum-and-Collisions/The-Cart-and-the-Brick/The-Cart-and-the-Brick-Interactive
5. Copy the completed data tables from Sheets to your Google Doc. Need a sample data table on Sheets? LINK
6. Complete the conclusion, and any remaining steps.