Dynamics Test

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Scribe

Hi guys sorry I'm late .
On Thursday we were doing the lab about friction.
On Friday we did the test about Dynamics.  And don't forget to read Chapter 9 in the Green Book.
That's all.
Next scribe is NaTaSha

TEST TOMORROW!!!

Hey every1! No 1 has been posting so I thought I'd get us going again. .
Today in class Ms. K. went over the answers for the "Advanced Forces" assignment sheet she gave us the other day, on the Smart board. (Check out the link on the last post.) This was after we went over the answers for the "Using Concepts" on the boards in class.
The answers for those were:
1. m = 250 kg
2. F = 3000 N
3. m = 5 kg
4. coeffiecient of sliding friction = 0.255 (no units for this 1 !remember!)
5. acceleration = -2 m/s^2
skip 6
7. a = 3.267 N/kg
other side:
1a) acceleration = 4.9m/s^2
2. max acceleration = 0.2 m/s^2
3. coefficient of sliding friction = 0.4

Then Ms. K. gave gave us another assignment sheet to do. err.. & i think that was all =S
Hope I'm not missing anything! STUDY HARD! + good luck 2morrow!!!

oh ya.. and the next scribe is H2O .. try 2 post this time!

Dynamics Review

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Dynamics - Forces on an Inclined Plane and Forces in Two Dimensions

Hey everyone it's xxcoolguyxx scribing for today! I apologize for the late post. Anyways on Thursday, the class started off answering the questions from p.196 #'s 1-4. Then, we answered Chapter 7 Study Guide. The answers are below this post.

Homework is Chapter 5 Review and Enrichment!


I guess that's everything we did on Thursday.

I hope everyone had a nice long weekend! ^_^



DRum RoLL PlEaSe.......




NExT SCRIBE is H2O

Ch.7 Study Guide

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Problems 1-4 p.196

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STUDY PERIOD.....sweet.

Hi everyone,
(A lil late????? Sorry, just getting the hang of things here!!)

Well, NO TEACHING was done in class on Feb 20, we had a STUDY PERIOD in which we were told to:

STUDY page 194-196

DO problems 1-4 on p.196.



It's been great pleasure scribing for today as you can see, there's nothing much to write.
NEXT SCRIBE****ding ding ding*** xxcoolguyxx.

Equilibrium Problems and Inclined Planes

We had a lot done in class today. First, we continued in going through the PHYSICS 40S INTRODUCTORY UNIT WORKSHEET: VECTORS (numbers 4-8). Next, we went through the questions at the last page of the DYNAMICS UNIT-EQUILIBRIUM handout. ALL ANSWERS ARE ON THE SLIDES POSTED BY MS. K.

After going through the sheets, Ms. K started discussing about INCLINED PLANES. After that, she told us to read pages 194-196 from the book and solve the problems on page 196, 1-4.

Here are the questions:

1.A copy of Physics: Concepts and Connections leaves the printing press and slides down a 4.0-m-long ramp into the arms of an eager physics student. If the ramp is inclined at an angle of 250 to the horizontal and has a coefficient of kinetic friction of 0.10, how long will it take the 2.0-kg textbook to reach the student?

2.The plastic case from your least-favourite CD recording is flung up a frictionless ramp, inclined at an angle of 200 to the horizontal. If the case leaves your hand at a speed of 4.0 m/s, how long will it take before the case comes to rest?

3.A skateboarder slides down a frictionless ramp inclined at an angle of 300 to the horizontal. He then slides across a frictionless horizontal floor and begins to slide up a second incline at an angle of 250 to the horizontal. The skateboarder starts at a distance of 10m from the bottom of the first incline. How far up the 2nd incline will he go if the coefficient of kinetic friction on the 2nd incline is 0.10?

4.Batman is driving the Batmobile down a hill coming from the Bat cave. The hill is inclined at an angle of 300 to the horizontal and has a coefficient of kinetic friction of 0.28. What force must the Batmobile’s engine apply to cause the Batmobile to accelerate at 0.60g?

The DYNAMICS SHEET IS DUE ON THURSDAY guys!!!
That’s all for today/tonight… have a good night. =)





next scribe....FebiO

Inclined Planes

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Equilibrium Problems

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Flip's Equilibrium Problems

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STATIC EQUILIBRIUM-

this is 90039305...last Friday..as we got in to Physics class we first discussed the static equilibrium with the worksheet she gave us couple of days ago.(chapter 4: Newton's second law- forces and acceleration)..the Nellie newton law..

Static Equilibrium occurs when the net force is Zero..


After that, we answered all together the long sheet numbers 1-4 (answers were been posted by Ms.K) then the rest are practices for us..Then Ms.K hand out new worksheet, to be hand in on Wednesday. 5items assignment..
and thats all..

sorry for the delayed..
i hope you guys are enjoying your long weekend.=))

the next scribe is AEBE.

lets all enjoy our rest day.and get ready for tomorrow!see you guys!

FBD 02-14-08

As of today's class, Ms. K is back and we corrected our first test that we did last tuesday which is the acceleration test. You can check the answers that Ms. K had posted. I think Ms. K is still sick so THANK YOU for the effort. Next thing, she discuss a little about Free Body Diagram and as you can see at the bottom, the slide tells us that in the 1st case, the car was just steady on the ground; 2nd case, the car is moving at constant speed; and 3rd case, the car is moving to the left and its speed is increasing.

We also corrected the front page of the FBD sheet that we received yesterday and handed in the back of the page. I think that's all for today. I got to go=)

Happy Valentines Day!!!
next scribe, as she wished, is...90039305.

Free Body Diagrams

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Wednesday's Class

Hi! This is CowMilk..................Today Ms.K was away,a substitute came for her and assigned us to read the "Physic Book" ,and he handed out some pages to work on ...That is all today

Next scribe will be uhhhhhhhhhhhhh Jessica ^^