Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If...
Transcript of Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If...
![Page 1: Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If you related the position of the runner to the background in each frame taken in 1](https://reader034.fdocuments.in/reader034/viewer/2022052002/60153981d2d8e74538374237/html5/thumbnails/1.jpg)
Picturing Motion: Dot Diagrams
• If you related the position of the runner to the background in each frame taken in 1 second intervals, you would conclude that the student is in motion.
• This series of images, taken at regular intervals, creates a motion diagram for the change in the student’s state of motion.
![Page 2: Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If you related the position of the runner to the background in each frame taken in 1](https://reader034.fdocuments.in/reader034/viewer/2022052002/60153981d2d8e74538374237/html5/thumbnails/2.jpg)
• Roll a ball along a horizontal surface, and its velocity is constant because no component of gravitational force acts horizontally
• Drop it, and it accelerates downward and covers greater vertical distances each second.
![Page 3: Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If you related the position of the runner to the background in each frame taken in 1](https://reader034.fdocuments.in/reader034/viewer/2022052002/60153981d2d8e74538374237/html5/thumbnails/3.jpg)
By noting the distance the object moves in equal time intervals, you can determine the
object’s state of motion • A: at rest
• B: moving at a constant speed
• C: speeding up • D: slowing down.
![Page 4: Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If you related the position of the runner to the background in each frame taken in 1](https://reader034.fdocuments.in/reader034/viewer/2022052002/60153981d2d8e74538374237/html5/thumbnails/4.jpg)
Use a dot motion diagram model to draw simplified motion diagrams
• A: at rest • B: moving at a
constant speed • C: speeding up • D: slowing down.
![Page 5: Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If you related the position of the runner to the background in each frame taken in 1](https://reader034.fdocuments.in/reader034/viewer/2022052002/60153981d2d8e74538374237/html5/thumbnails/5.jpg)
• Use the dot diagram model to draw a motion diagram for an object moving at a constant speed.
• Use the dot diagram model to draw a
motion diagram for an object starting at rest and speeding up.
• Use the dot diagram model to draw a
motion diagram for an object that starts from rest, speeds up to a constant speed, and then slows to a stop.
![Page 6: Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If you related the position of the runner to the background in each frame taken in 1](https://reader034.fdocuments.in/reader034/viewer/2022052002/60153981d2d8e74538374237/html5/thumbnails/6.jpg)
• Use the dot diagram model to draw a motion diagram for a wheel turning at a constant speed. First place the dot at the hub of the wheel. What would the diagram look like if the dot were placed on the rim of the wheel?
![Page 7: Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If you related the position of the runner to the background in each frame taken in 1](https://reader034.fdocuments.in/reader034/viewer/2022052002/60153981d2d8e74538374237/html5/thumbnails/7.jpg)
Dot Diagrams & Vector Quantities
• To determine displacement, velocity, and acceleration, a coordinate system must be specified.
• Normally the positive values of x extend horizontally to the right, and the positive values of y extend vertically upward.
![Page 8: Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If you related the position of the runner to the background in each frame taken in 1](https://reader034.fdocuments.in/reader034/viewer/2022052002/60153981d2d8e74538374237/html5/thumbnails/8.jpg)
• The sign of the average velocity depends upon the chosen coordinate system. The coordinate systems in a and b are equally correct
![Page 9: Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If you related the position of the runner to the background in each frame taken in 1](https://reader034.fdocuments.in/reader034/viewer/2022052002/60153981d2d8e74538374237/html5/thumbnails/9.jpg)
• Color Conventions – Displacement vectors are green. – Velocity vectors are red. – Accelerations vectors are violet
![Page 10: Picturing Motion: Dot Diagrams - New Providence School ......Picturing Motion: Dot Diagrams • If you related the position of the runner to the background in each frame taken in 1](https://reader034.fdocuments.in/reader034/viewer/2022052002/60153981d2d8e74538374237/html5/thumbnails/10.jpg)
Graphs and motion diagrams are useful in differentiating constant motion and motion
that is accelerated. • A speed-versus-time graph • A distance-versus-time graph