2/29/12

LEAP DAY! Leaping right back into PHYSICS!

Today:
We reviewed the displacement graph---REMEMBER to have your displacement on the Y axis and your time on the x axis. REMEMBER to label both axis (displacement in METERS and Time in SECONDS). Your graph also needs a TITLE! So the one below is missing a title!

• Slope of the line is Velocity! 
•  

Notice the graph above: from 0-1 seconds, the person has NOT changed displacement (has not moved) therefore there is NO velocity. From 1 second to 3 seconds there is constant positive velocity of 20 m/s. From 3 seconds to 4.5 seconds there is NO velocity as the person did not have any change in displacement (they are stopped).  From 4.5 seconds to 6 seconds, there is constant negative velocity of 13.3 m/s.

Add to your Formula Sheet (Velocity Formula)

2/27/12

Hope you all ENJOYED your snow day on Friday!

Today:

• We turned in distance vs displacement labs 
• reviewed velocity 
• REMEMBER: if the velocity is in km/hr and the time is given in minutes. Before you can compute displacement, you need to convert minutes to hour.
• REMEMBER: displacement has direction--you need to think about that!
• REMEMBER: keep answers complete until the end and THEN change to significant digits
• We did LOTS of sample problems on white boards :) 

HOMEWORK: 
Chapter 1 Measurement Review Sheet--DUE FRIDAY!!! 

2/23/12

VELOCITY! 

• Displacement divided by time 
• Change in X over Time 
• Final Location  - Initial Location divided by time 

For ALL problems in this class: 

1. List Givens and Formula
2. Show ALL work
3. Provide labels on your answers
4. Give your answers in significant digits

In Class Assignment: page 44  Practice A  1-6 

(KEEP all homework for Chapter 2 on ONE sheet of paper--make sure you label your homework/classwork)
**Check your work with Mrs.Boyer/Mr.Groh's teacher edition

REMINDER: It is up to you to READ Chapter 2 at home on your own!!

For TOMORROW

Cover Sheet for your lab--lab name and who did the lab
(add color for extra three points on the lab)
Add data sheets and maps behind
Lastly, have a section for sources of error. Where might there have been a mistake made during your lab (measuring of shoe, steps, timing, etc. BE SPECIFIC--not generic) 

12/22/12

 Today: 

We went over Chapter 1 Tests--some of you were not very happy with your grade. Most of the errors were small but added up.  

**Correction--you got to SEE your test grade but not your test yet as we had so many peers not take the test due to absences. We will be showing tests soon!**

REMEMBER to check your significant digits, labels and Metric Conversions!!! These are going to be assessed on all chapter tests. 

In class, we chatted about distance versus displacement (click on to see notes) 

and Velocity versus Speed (click on to see notes) 

Lab Information Discussed today (click on this link to see it)

ADD TO LAB (DUE tomorrow) 

• speed to destination 
• speed back 
• velocity to destination 
• velocity back 
• total speed for trip 
• total velocity 

2/20/12

Today we had a pop quiz-- you too can prevent this by STUDYING when you show up for class!!!!

TEST TOMORROW over:

• Significant Digits
• Distance versus Displacement 
• Trig (SOH CAH TOA)
• Metric (SI System)
• Conversions
• Parallax
• Prescision, Accuracy and how they are related

2/17/12

Sorry I have not blogged much this week--As you all know, I was out sick :(

Notes on Distance vs. Displacement

Distance is how far you are from something--actual path traveled (think a car driving from school to the post office)

Displacement is the change in placement (the straightest path--think if you could get from school to the post office on a straight line)

Information on the Distance Vs. Displacement Lab

REMINDERS for the Lab:

• Map needs detail that we know where you went and how you got there 
• Your trip to your destination and trip back need to be in DIFFERENT COLORS
• Tables need great labels and a fabulous title 
• Think about cm to m etc. for measuring....and conversions...etc on your data table 
• you need your table in meters and seconds......
• REMEMBER: use SIG DIGS!! 
• 
  

2/14/12

Happy Valentine's Day!

Today we worked on 12.1 and 12.2 worksheets and "Practice Exercises side only" evens--all due tomorrow :)

ASK if you have questions!!!!!!!

2/13/12

TRIG Review! :) 

 

Theta= = generic symbol for an angle

To find angle Ɵfrom two sides you use inverse function (meaning Tan ^-1 or  Sin ^-1  or cos  ^-1 ) then the side divided by the side

                        Example: Tan Ɵ=(11\14) so......
                                                               in your calculator: 2nd tan (11/14)=38.157..... so Ɵ=38.2

Other Reminders: 

• Use Significant Digits for Sides  (Use the lowest amount of sig digs)
• Use one decimal spot for angles (##.#)

2/10/12

Happy Friday!

Great job watching Special Olympics Bball Yesterday--We saw a great deal of Spartan Pride! :)

Mid week we worked on conversions--

• Metric is easy--use your mnemonic device!
• English to Metric (or vice versa) use train tracks. Example 1   Example 2

Today:  Finishing up conversions worksheet, Algebra Review

2/7/12

CONVERSIONS!!!!

Metric! 

"Train Track" Notes regarding English to Metric Conversion (and vice versa) coming tomorrow!

2/6/12

Precision vs. Accuracy 

Notes on Precision Vs. Accuracy 


Thinking Map on Precision vs. Accuracy


Percent Error 


Notes on Percent Error 

Calculator Tips #1
Calculator Tips #2

2/3/12

PRETEST TODAY! 

Thanks for all of your hard work and effort :) 

Notes from Today

Precision vs. Accuracy 

 

Scientific Notation:

--a way to write numbers so we can get them into significant digits

--x10 to a power OR E to the power

RULES:

1.       Write your number between 1 and 10 (never 10)

2.       Write the exponent as the number of times you moved the decimal

3.       Really small numbers—use a negative number for the exponent