Holy shit I rule.
Physics is pretty thought intensive, everyone in our class seems to be struggling
Physics was the easiest class I took in my entirety of high-school.
maybe you need a better teacher
i'm taking calculus-based physics next year n_n
algebra-based physics is actually harder because you have to derive the formulas without any knowledge of the actual calculus involved in physics
The less I understand what I'm doing, the more problems I can unintentionally solve.
Our physics teacher is terrible and will spend a whole class period on a single simple problem and draw it out to be 15 times longer than it needs to be, and then slaps us with homework that's infinitely harder. Only about 2 people ever pay attention, and only one of them knows what to do more than 90% of the time.
we're all lost
Quote from: Veal on February 16, 2009, 03:42:19 PM
Physics was the easiest class I took in my entirety of high-school.
maybe you need a better teacher
reefer is in college
F=MA
Quote from: Ethereal on February 16, 2009, 03:44:43 PM
i'm taking calculus-based physics next year n_n
algebra-based physics is actually harder because you have to derive the formulas without any knowledge of the actual calculus involved in physics
Once you take Calculus you'll laugh at the placement of the word derive.
Quote from: reefer on February 16, 2009, 03:49:54 PM
Once you take Calculus you'll laugh at the placement of the word derive.
He's taken calculus, he used that word on purpose.
Three blocks are connected on the table. The table is rough and has a coefficient of kinetic friction of 0.300. The objects have masses of 4.00 kg, 1.00 kg and 2.00 kg, as shown, and the pulleys are frictionless.
(http://img5.imageshack.us/img5/6766/p550un6.gif)
Quote from: Raekewn on February 16, 2009, 03:48:03 PM
F=MA
Here is the problem I did >.<
Ʃf
1=-m
1g+t=m
1a
t=m
1a+m
1g
t=m
1(a+g)
Ʃf
3=-t
2+m
3g=m
3a
t
2=m
3g-m
3a
t
2=m
3(g-a)
Ʃf
2=-t+t
2+f
k=m
2a
-t+t
2+μ(m
2g)=m
2a
-m
1(a+g)+m
3(g-a)+μ(m
2g)=m
2a
a=2.38
So much room for mistakes, I may have typed it in wrong but I got it right.
i just realized the only reason physics was so easy was because i had the best teacher ever.
since none of that means anything to me anymore.
Quote from: reefer on February 16, 2009, 03:49:54 PM
Once you take Calculus you'll laugh at the placement of the word derive.
uh no not really given that while the noun is derivative, the verb is differentiate akudood;
You sure that's the right answer? baddood;
Quote from: Lozal's Other Best Friend on February 16, 2009, 04:16:41 PM
You sure that's the right answer? baddood;
Yes, I submitted it into an online website that tells me if it's right or wrong.
Quote from: reefer on February 16, 2009, 03:59:23 PM
Three blocks are connected on the table. The table is rough and has a coefficient of kinetic friction of 0.300. The objects have masses of 4.00 kg, 1.00 kg and 2.00 kg, as shown, and the pulleys are frictionless.
(http://img5.imageshack.us/img5/6766/p550un6.gif)
Here is the problem I did >.<
Æ©f1=-m1g+t=m1a
t=m1a+m1g
t=m1(a+g)
Æ©f3=-t2+m3g=m3a
t2=m3g-m3a
t2=m3(g-a)
Æ©f2=-t+t2+fk=m2a
-t+t2+μ(m2g)=m2a
-m1(a+g)+m3(g-a)+μ(m2g)=m2a
a=2.38
So much room for mistakes, I may have typed it in wrong but I got it right.
we did those type of problems 4 weeks into our physics class
i dropped out yay!
Quote from: Probably Felt on February 16, 2009, 04:20:11 PM
we did those type of problems 4 weeks into our physics class
i dropped out yay!
I'm four weeks into my class too.
Quote from: reefer on February 16, 2009, 04:19:39 PM
Yes, I submitted it into an online website that tells me if it's right or wrong.
Im confused. You minus the frictional force and the force of the 2 kg block from the force of the 4 kg block? Then divide it by...6? I got 2.77.
baddood;
Quote from: Lozal's Other Best Friend on February 16, 2009, 04:27:36 PM
Im confused. You minus the frictional force and the force of the 2 kg block from the force of the 4 kg block? Then divide it by...6? I got 2.77.
baddood;
I had to divide by 7. I might have written all my work down wrong, it was just to show how much crap I had to go through to get one answer.
Quote from: reefer on February 16, 2009, 04:39:12 PM
I had to divide by 7. I might have written all my work down wrong, it was just to show how much crap I had to go through to get one answer.
Why 7?
baddood; baddood; baddood;
Oh wait, shit. I didn't add 4 + 2 + 1 right. Lol.
Quote from: reefer on February 16, 2009, 04:24:26 PM
I'm four weeks into my class too.
But I was in 11th grade. ;_;
um i'm four weeks into physics and we're doing chemistry stuff for some reason
just remember not to drink and derive guys
Quote from: Probably Felt on February 16, 2009, 05:18:22 PM
But I was in 11th grade. ;_;
I'm two years older, why the hell were you in that class? Was that college or not?
I failed physics. Twice.
Fuck that subject.
(http://img22.imageshack.us/img22/2458/mathmg0.png)
Please help
(http://img514.imageshack.us/img514/7734/mathhm3.png)
Quote from: Probably Felt on February 16, 2009, 04:20:11 PM
we did those type of problems 4 weeks into our physics class
i dropped out yay!
We did that in the second quarter of physics.
damn our teacher sucks
Quote from: reefer on February 16, 2009, 05:53:21 PM
I'm two years older, why the hell were you in that class? Was that college or not?
It was a honors class and everyone whined and complained because we had a really hard teacher so I dropped down to a extremely easy class.
But luckily there was
someone else who dropped out with me. :3
Quote from: Probably Felt on February 16, 2009, 08:04:32 PM
It was a honors class and everyone whined and complained because we had a really hard teacher so I dropped down to a extremely easy class.
But luckily there was someone else who dropped out with me. :3
LOL OMG
I took AP Chemistry instead of AP Physics. happydood;
Quote from: Pancake Persona on February 16, 2009, 08:02:40 PM
We did that in the second quarter of physics.
damn our teacher sucks
I wish we went slower, it's fucking too much at once.
Quote from: reefer on February 16, 2009, 08:08:06 PM
I wish we went slower, it's fucking too much at once.
The problem is she gives us new material everyday, but she only goes over the same old problems so we don't understand any of the new stuff we're getting.
I'd prefer she go faster if she'd at least really teach us how to solve the new stuff.
Quote from: Ethereal on February 16, 2009, 08:08:02 PM
LOL OMG
I took AP Chemistry instead of AP Physics. happydood;
You should've taken it over the summer. happydood;
Quote from: Ethereal on February 16, 2009, 08:08:02 PM
LOL OMG
I took AP Chemistry instead of AP Physics. happydood;
I hate Chemistry.