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!!! 

2/13/12

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 (##.#)

Thursday 2/2/12

Significant Digits Rules Add/Subtract AND Mixed








Summarized Sig Dig Rules