1 / 14

Daily Agenda

Daily Agenda. Ms. DeSalvo November 15, 2013. CPS Bell Ringer 11/15/13 Activity: Vectors. When we are drawing the force diagrams, what do the arrows around the object represent?. CPS (Period 6,8) November 15, 2013. Last Class (See me for missed work) Force Diagrams Diagrams. Today

jasmine-buckner
Download Presentation

Daily Agenda

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. Daily Agenda Ms. DeSalvo November 15, 2013

  2. CPS Bell Ringer 11/15/13Activity: Vectors When we are drawing the force diagrams, what do the arrows around the object represent?

  3. CPS (Period 6,8)November 15, 2013 Last Class (See me for missed work) • Force Diagrams • Diagrams Today • Force Vectors • Force Vector HW Due Monday.

  4. Vectors!!! • Represented by an: • Size of Arrow: Magnitude “how much” • Direction of Arrow: direction of property • Ex: Direction of velocity

  5. Adding Vectors • If vectors are in the same direction: • Line the arrows up and add magnitude 6 m/s + 2 m/s = 8 m/s right

  6. Subtracting Vectors • If vectors are in the opposite direction: • stack the arrows and subtract (right – left) 6 m/s - 2 m/s = 4 m/s right

  7. Practice Vector A Vector B Vector C 6 m/s 1 m/s 4 m/s • Vector A + Vector B • Vector A – Vector C • Vector B – Vector C

  8. Force: An action exerted on an object (a push or a pull) in order to change the state of rest or motion of an object. Measured in Newtons (N) Net Force: • Combination of all the forces acting on an object. (add them up)

  9. Balanced Forces • If all of the pushes and pulls are even on an object, then the object “keeps on doing what it was doing” • Tug-o-war • Two teams that are evenly matched play tug-o-war • NOTHING HAPPENS

  10. Unbalanced Forces • Unbalanced forces cause objects to change velocities • Tug-o-war • Two teams that are unevenly matched play tug-o-war • One team will win

  11. Unbalanced Force • What happens when an object has an unbalanced force acted upon it? • Unbalanced forces cause acceleration!

  12. Practice

  13. If the forces are… • Equal – • Nothing happens • Ex: A book sitting on a shelf • Fg = 25 N • FN = 25 N • Unequal – • The object changes what it is doing • Ex: • FA = 25 N right • FA = 100 N left

  14. Practice Problem • What is the net force acting on a 5 kg ball in free fall?

More Related