Tuesday, November 12, 2019

Unit 5: Unbalanced Forces

Here is a reading on this chapter.  Use it like it is a book!


November 13, 2019
November 15, 2019

November 19, 2019
  • If you were absent watch this video
  • Problem Set 1 

November 21, 2019

November 23, 2019
  • Paul Newtons 2nd Law Video   

December 2, 2019 
December 4, 2019  (Wed)
  • Friction:     Powerpoint
  •                   Note sheet is with Nov. 20 material
  • Mr. B:        Video Notes
  • Friction Problems   Due:  Tuesday
December 6, 2019
  • Work Day for Friction
December 10, 2019
December 12, 2019
December 16, 2019
  • Test
December 18, 2019 
  • Work on Balloon Rocket Cars
December 20, 2019
  • Balloon Rocket Cars Races



Unit 5 Notes: (Unbalanced Forces, F=ma)
Notes from class: 

Newton's 2nd Law: Net Force = Mass x Acceleration. The Net Force can be found by taking R - L, or L - R, or U - D, or D - U. How do you know which one? Take the direction it accelerates to be positive, then subtract forces in the opposite direction. So if something accelerates to the Right, it will be Right minus Left.
Friction: We learned a formula for determining the amount of friction acting on an object: Ff=(mu)*FN.

We have learned about Acceleration before--Kinematics. We can use kinematics equations to find acceleration, and then plug that into F=ma

I created an EPUB version of the notes for this unit. Try it out on your eReader device (Nook, Kindle, iOS device, etc.), and let me know how it worked. File is found in the Unit 5 folder on the Physics Files Page. (There is also a .pdf version that can be viewed/printed from a computer if you do not want to use the eReader format.)

Problem Set Solutions can be found on the Physics Files Page. These Problem Sets are based on what we learn each day, and are similar to the online homework. If you are struggling with the online homework, check out the corresponding Problem Set Solution to see in detail how to approach and solve the problems.

Extra help on Unit 5: 

The Physics Classroom: Newton's Laws

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