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)

2/23/12

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