Agenda and Homework for November 16, 17

• Do Now
  
• A 70-kg skier leaves a ski jump at a velocity of 14 m/s. What is the skier’s momentum at that instant?
  
• A) 5 N•s
• B) 50 N•s
• C) 980 N•s
• D) 9800 N•s

• momentum quiz (1st period)

• Chapter 10.1 Energy and Work
  
  
• definition of work
  
  • W = Fd
• definition of kinetic energy
  
  • KE = 1/2 mv²
• work-energy theorum
  
  • W = ΔKE
• work (angle between Force and Displacement)
  (extra credit)
  
  • W = F d cosθ
• definition of power
  
• P = W/t

• Robot Work Lab

• Homework
  
  • read pp 257-265
  • do problems #37, 44, 46, 59 on p. 278

Agenda for November 12, 15

• Notebook check
• Momentum quiz (2nd and 4th period)
• Golf shot?
• chain reaction start

Agenda for Oct 18+19, 2010

1. Do Now
   
   1. Released STAR test question
2. Introduction to class web site
   
   1. Subscribe to class mailing list
3. Chapter 4 Practice Test
   
   1. email results to mister.gould@gmail.com
4. PhET Java Simulations
   
   1. The Moving Man
   2. Lunar Lander
   3. Forces in 1 dimension
   4. Forces and Motion (similar to above)
   5. Maze Game
5. Discussion about Chapter 4 quiz
   
   1. Wednesday/Thursday
   2. Questions from Homework, 3 worksheets
   3. Online study chat room Tuesday night

September 28, 29 BBC

Do Now: [note: F = ma, where 1 N = 1 kg •m/s²]

Please consider this released STAR test question:

A student attempts to measure the mass of a brick by measuring the force required to accelerate it at 1 m/s² on a level surface. The force required is 2 N, and the student concludes that the brick has a mass of 2 kg. A balance shows that the mass of the brick is really 1.5 kg. The experimental error is most likely due to

A. gravity.
B. work.
C. friction.
D. inertia.

Agenda

1. Do Now
2. Introduction to Force and Motion
   
   
   
   1. Push or a pull
   2. Contact Forces
      
   3. Field Forces
   4. example
3. F = m•a, a = F/m
4. Introduction to inertia
5. Frames of Reference

Homework:

  Work on this worksheet

Agenda for September 21-22

Do Now:
Please consider this released STAR test question:

A student does an experiment to measure the acceleration of a falling object, which is 9.8 m/s². The student obtains an experimental value of 14.6 m/s². The reason for this variation is most likely due to

1. human error.
2. air resistance.
3. local fluctuations in gravity.
4. the mass of the object.

Announcement:

There will be a 45 minute peer-to-peer tutoring session at 3PM on Tuesday, in preparation for the Unit 1 Quiz on Thursday/Friday. Students will sign in, and receive 1 extra credit point. The quiz will contain materials from Chapters 1-3, as well as any other topics covered in class.

Agenda

1. Do Now
2. 5 Kinematics Formulas PPT
3. Homework presentations
4. Worksheet problems

Homework

p. 80 #68, 70; p. 81 #74, 78, 82