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Post by seanege on Feb 17, 2007 7:33:32 GMT -5
hey guys. its sean again. i am at harvard university right now with the indians and lee (schiutema). anyways, we are having alot of fun, but we are freezing our a#$ off. its so cold and the river has frozen over. see you guys in a few days.
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Post by Lindsay Albright on Feb 20, 2007 18:30:09 GMT -5
haha thanks for the update sean...
we are here learning about Newtons laws (3 major ones), watchin the LVDs, etc. shouldnt be too hard for yall to catch up.
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Post by seanege on Feb 20, 2007 22:07:59 GMT -5
thanx for the update lindsay. is newtons law fun to learn or what? i am sure its fun. cya in class
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Post by spencer on Feb 22, 2007 15:12:34 GMT -5
oh yeah its a blast  |
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Post by Amanda Hud on Feb 24, 2007 23:14:33 GMT -5
spencer. im sensing some sarcasm in your tone. haha i like this unit. it seems to be one of the easier ones. i actually get it. haha but for real, im going to try to get people together monday afternoon to work on homework and study and what not. let me know in class if you want in.
have a greattt rest of the weekend yall
-ahud
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Post by fara soubouti on Feb 27, 2007 10:42:06 GMT -5
hey you guys! i can't get number 20 on the online homework! it's really hard. Any ideas?
~~ Thanks!
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Post by Chiraag on Feb 27, 2007 20:09:09 GMT -5
I know the deadline is already past, but here is how you do #20:
1. Draw the free body diagram. After doing this, you realize that the only net force on car the the force of friction. So...
2. umg = ma. The m's cancel, leaving ug = a.
3. Solving for a allows you to choose a kinematic equation, and solve for d!
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Post by nancyy on Mar 2, 2007 15:22:39 GMT -5
does anyone understand how to do number 13 on the homework?
nancyy
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Post by allisonxc on Mar 3, 2007 16:41:12 GMT -5
Nancy,
I recently asked Mr. Fisher about this problem. He said to use that vector equation, velocity= the square root of (Vx+Vy). Vx is horizontal velocity (given) and Vy is vertical velocity, though I am still pondering how to find Vy because the equation needs values like Vi and time. Maybe you can figure it out!
-Allison
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Post by Mr Fisher on Mar 5, 2007 14:14:11 GMT -5
What is intial velocity in the y-direction?
Hint.....begins with a z , ends with an o.
Remember, you are now working with two dimensions.
So use the equation for the distance something falls in free fall to find the time the something takes to reach the ground.
Once you know the time of fall, how do you find the velocity for that time "t"?
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Post by allisonxc on Mar 5, 2007 23:04:26 GMT -5
Got it! It was not too difficult once I was able to organize my thoughts (and equations). I am planning on compiling one equation for each quantity one may need to find in a projectile problem to make my life easier.
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Post by Suman Siva on Mar 6, 2007 19:17:28 GMT -5
I was wondering whether anyone had a physics quiz cd. if they did and if they were willing to give me one that would be cool. thanks.
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Post by Lindsay Albright on Mar 6, 2007 21:03:10 GMT -5
I was wondering if anyone had any ideas about what extra credit to do for this unit. sometimes there are so many i have trouble keeping up! thanks!!
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Post by Fara Soubouti on Mar 8, 2007 4:40:14 GMT -5
Well Lindsay, there are many things you can do, such as doing extra glencoe quizzes, team spirit, reading his epic conditions and doint the corresponding activity, a study group, annotating an article, going to the tutoring. just to name a few lol
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Post by leechristian on Mar 8, 2007 20:49:41 GMT -5
I really need the physic quiz cd as well! If anyone has one plz make a copy. Thanks that helps me alot.... And i hope everyone did well on that test today!! It was harder than other two we have had...
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