Sept. 18, 2012

Physical Science A
No Bellwork for today!
Goals:
       -Be able to use the distance vs. time graphs to describe the motion of an object
Discuss graphing speed and velocity.

Use motion detectors to predict and then produce distance vs. time graphs.

HW:  Motion Man Activity
Go to the website:
http://phet.colorado.edu/en/simulation/moving-man

Fill in the sheet after each activity.

Physics (Day 10)

Bellwork:
1.  The peregrine falcon is the world's fastest known bird and has been clocked diving downward toward its prey at a constant vertical velocity of 97.2 m/s.  If the falcon dives straight down from a height of 100 m, how much time does this give a rabbit below to consider his next move as the falcon begins his descent?


2.  A tortoise and a hare are in a road race to defend the honor of their breed.  The tortoise crawls the entire 1000-meter distance at a speed of 0.2 m/s while the rabbit runs the first 200.0 meters at 2.0 m/s.  The rabbit then stops to take a nap for 1.3 hours and awakens to finish the last 800 meters with an average speed on 3.0 m/s.  Who wins the race and by how much time?



3.  In the Wizard of Oz, Dorothy awakens in Munchkinland where here house has been blown by a tornado.  If the house fell from a height of 3000 meters, with what speed did it hit the Wicked Witch of the East when it landed?

-Go over the prelab, discuss the answers.

-Finish the Lab.  Discuss the results.  Address any problems that you may have with the summary questions.

To review for the test you could do the following problems:

        pg 52-Q's 41,42,47,48
           
        pg 53-Q's 49,50,51,57

        pg 55-Q's 1-6