1 / 15

Motion in 1D

Motion in 1D. From the Simpsons. Imbalance of forces. We have talked a lot about Forces being balanced. When forces are unbalanced it results in the object accelerating. Distance.

wilmet
Download Presentation

Motion in 1D

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Motion in 1D From the Simpsons

  2. Imbalance of forces • We have talked a lot about Forces being balanced. • When forces are unbalanced it results in the object accelerating.

  3. Distance • Any time an object moves it moves a distance. In the picture the Simpson family has moved a distance from their house. • This is measured in meters, and is always positive. • A scalar quantity

  4. Displacement • The change in the position of the particle • Homer gets up from the couch and goes to the refrigerator. Then he comes back. His displacement is zero • Measured in meters • A vector quantity

  5. B A Displacement Example • Homer is chasing Bart around the house. He catches him at point B, What is the distance and displacement?

  6. Speed • Think of your car • Speed is change in distance over the change in time. • Measured in Meters/sec • Always positive • A scalar quantity

  7. Velocity • Like speed, but with another component: Direction • Measured in m/s • A vector Quantity • Velocity is important when you are trying to go to a specific destination.

  8. Velocity Formula V = displacement change in time

  9. Velocity Problem • Marge leaves from the store. She travels 1 km for 10 m/s west. Then she needs to pick up the pace and get home before Homer does. She increases her velocity to 20 m/s west for 1 km. What is her average velocity

  10. Acceleration • Is what happens when you change velocity over time. • Measured in m/s2 • A vector quantity • Is the result of imbalanced forces • Can result when • You speed up/ slow down • Turn • We assume that this is uniform • Has a sign (+ or -)

  11. Acceleration Formula

  12. Sideshow Bob has escaped • Bart gets on his bike to escape the madman and goes from rest to 10 m/s in 10 seconds. What is his average acceleration

  13. Braking • Marge is moving at 10 m/s when she has to hit the brakes to avoid a boy on a skateboard. How long does it take her to stop if her average acceleration is -5 m/s2

  14. Free Fall • Free fall is another example of 1D motion just in the Y direction • The acceleration in these problems is known: • -9.8 M/S2 • The acceleration due to gravity • Typically seen as a negative value due to the fact that gravity pulls down

  15. Equations!

More Related