Answers to Chapter 4 WS

1. a-f  do in class
2.  a)  23.8 N,  b)  7.73 N
3.  a)  see in class   b)  30.0 N left     c)  330. N up    d)  331 N at 84.8 degrees left and up from horizontal
4.  23. m/s^2
5.  1.4 m/s^2
6.  14 N
7.  2.1 kg
8.  37 N
9.  Fa = 3.6 N, Fb = .4 N
10.  98.1 N
11.  51.0 kg, 112 lbs
12.  mass stays the same, weight decreases
13.  -4.2 m/s^2
14.  5 kg
15.  a)  981 N, b)  640 N
16.  730 N
17.  3.73 m/s^2
18.  0.444
19.  a)  -.981 m/s^2    b)  29.4 m
20.  68 degrees 

Parent-Teacher Conferences Next Week--Parents Please Read!!

Next Monday and Tuesday, November 21st and 22nd, will be a chance to come in and discuss your student's progress.  The sessions will be held 8:30-11:30 am, 1:00-4:00 pm, and 5:30-8:30 pm on both days.  I want to let you know that on Tuesday, November 22nd,  I will not be available until 10:00 am because I will be meeting with the teachers of my own children across town.  I hope that I will still be able to meet with all parents who want to conference.  You are more than welcome to bring your student with you.  It is frequently very helpful to have their voice present at the conference.

I look forward to meeting with many of you next week!

November 14-December 2

• Tues 11/15:  Check off Problems 1-9 on Chapter 4 WS and go over.  Newton's 3rd Law.  Newton's Laws Labs.  Work on Problems 10-14 for Thursday.
• Thurs 11/17:  Check off Problems 10-14 and go over.  Turn in Newton's Laws Labs and Finish Demos.  Slipping and Sliding Lab (friction and normal forces).  Work on Problems 15-17.
• 11/21-11/25  Parent-Teacher Conferences and Thanksgiving Break.
• Mon 11/28:  Sample problems like 15-20.  Slipping and Sliding Lab, write-up due Friday.  Work time for lab and problems 15-20 (20 is extra credit)
• Wed 11/30:  Check off 15-20 and go over.  Plan for Air Resistance Inquiry Lab (1st Draft).  Hand out Chapter 4 Review.  Chapter 4 Test on Tuesday 12/6. 
• Fri 12/2:  Turn in Slipping and Sliding Lab.  Perform Air Resistance Lab.  Go over Data Processing and Conclusions.  2nd Draft of Air Resistance Lab due Thursday 12/8.  Go over Chapter 4 Review Problems.  

Updated Grades/SPARK Lecture/Chapter 3 Test

I have graded everything in my possession and have updated Edbox.  This will be your Quarter Grade unless you turn in late work or extra credit by 3:20 on Monday 11/7.  Check your grade over to make sure that it is accurate.  Every now and then you may have something graded that is not yet listed.  Make sure that you let me know this week if you find an inaccuracy. 

There is a SPARK lecture tomorrow at 3:45 (get there earlier if you really want to go!!).  Dr. Evan Clark, Director of the Sustainable Water, Energy & Environmental Technologies (SWEET) Lab at PSU will be speaking about "Technology in the Developing World:  Revolutions for Monitoring Success."  You need proof of attendance, and a 1-2 page summary of what the speaker talked about (not just notes) and your response to it.  This may be turned in by 3:20 pm on Wednesday to earn extra credit for 1st Quarter.

Finally, remember that we have a test on Chapter 3 tomorrow (Monday)!!  While it will not count for this quarter's grade, make sure that you go over the Review Sheet and/or go to the Physics Classroom (link on this website) to get help.

Answers to Chapter 3 Review (Test on Monday 11/7!)

1.  13.0 blocks at 22.6 degrees S of E
2.  92 m
3.  13.5 m and 142.5 degrees (37.5)
4.  0.83 s
5.  226 m
6.  b)  361 km/h    c)  1.6 degrees S of E
8.  (yes, I skipped 7, I'm not sure why....)
a)  vy = 130 m/s, vx = 96 m/s
b)  190 m (x), 240 m (y)
c)  vx = 96 m/s, vy = 110 m/s
d)  150 m/s at 49 degrees above horizontal
e)  13 seconds
f)  2500 m!!