Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show...
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Transcript of Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show...
![Page 1: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/1.jpg)
Chapter 2: Representing Motion
Pg. 30
![Page 2: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/2.jpg)
Launch Lab/demonstration
• What data did you collect to show which car was faster?
• What other data could you collect to determine which car is faster
![Page 3: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/3.jpg)
Put toys into motion categories
• How would you categorize these toys based on motion?
![Page 4: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/4.jpg)
Motion
• How do you know something is moving?
• What evidence would it take to convince them that something is moving?
![Page 5: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/5.jpg)
Frame of Reference and Reference Points
• What is frame of reference?
• What is a reference point? (show video from online activity)
![Page 6: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/6.jpg)
Various kinds of motion
• Throwing a touchdown football pass• Bowling • Bicycle wheel going around in a circle
Where do we start in physics???
![Page 7: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/7.jpg)
Linear Movement
• Movement in a straight line is the most basic• Sometimes represent motion in a motion
diagram• Draw a motion diagram and particle model
below
![Page 8: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/8.jpg)
Coordinate Systems pg. 34
• How do you explain to get to your house to someone who is not from town.
• What reference points did you use to explain where you house is?
![Page 9: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/9.jpg)
Coordinate Systems
• Coordinate system
• Origin
• Position
• distance
![Page 10: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/10.jpg)
Position does not equal Distance
• How are they different??? Examples-
![Page 11: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/11.jpg)
Vectors and scalars
• Magnitude
• Vector
• Scalar
• Resultant Adding vectors = place them tip to tail
![Page 12: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/12.jpg)
Tinkering with vectors lab
• Materials (lumps of clay/play do and straws)
![Page 13: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/13.jpg)
Distance and Displacement
• Are they the same???
• Think about going from this classroom to the library, how many possible ways can you get from here to there?
• Are all the ways the same distance?• Do you have the same displacement?
![Page 14: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/14.jpg)
Time Interval & Displacement
• ∆t = tf – ti
The time interval is equal to the final time minus the initial time
• ∆d = df – di
Displacement is equal to the final position minus the initial position
![Page 15: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/15.jpg)
Subtracting Vectors
• A – B = A + (-B)
• Draw the figure in textbook
![Page 16: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/16.jpg)
Position vs. Time graphs 2.3
• Pg. 39 Practice Problems (9-13)
![Page 17: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/17.jpg)
Instantaneous position
• The position at a particular instant
![Page 18: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/18.jpg)
Practice problems pg. 41
• Note: At what time do A and B have the same position?
• Why did you start the origin at where you did? What would happen if you choose runner B’s start as the origin; what would A position be?
• 14-18
![Page 19: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/19.jpg)
How Fast???
• Watch-They Might Be Giants “Speed vs. Velocity”
• What is speed; what is velocity?
![Page 20: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/20.jpg)
Average Velocity
• Average Velocity
• Calculate average velocity from figure 2-20 on page 43.
![Page 21: Chapter 2: Representing Motion Pg. 30. Launch Lab/demonstration What data did you collect to show which car was faster? What other data could you collect.](https://reader035.fdocuments.us/reader035/viewer/2022062717/56649e215503460f94b0df13/html5/thumbnails/21.jpg)
Practice problems pg. 45