CAV of Gang Green Posted November 11, 2010 Posted November 11, 2010 So many numbers. Since I'm sick and tired of school, and I want to enjoy my day off in peace without any school related stuff, I will avoid this topic until the answer to the problem is solved. Quote
Kuroida Posted November 11, 2010 Posted November 11, 2010 You have a day off?! You're so lucky! >.< And so far: using quadratic formula it becomes square root 100-120 .....which gives me a negative number and you can't square a negative number....We're on the right track though Maybe we're only supposed to add 5 and not 50....??? Quote
Unstream Posted November 11, 2010 Posted November 11, 2010 Okay, let's approach this a bit differently (I know I have it right this time). Let's go back to this equation: (1/2)at^2+v(i)t=(1/2)at^2+v(i)t Plugging everything in... (1/2)(0)t^2+10t=(1/2)(1.2)t^2+(0)t Simplifying... 10t=0.6t^2 But wait! The original problem says that object B starts 5 seconds after object A. That's very important. So the time for object A is 5 seconds more than the time for object B, so on the side where you're calculating object A, replace the "t" with "t+5". So you'll get something like this: 10(t+5)=0.6t^2 Think you can take it from here? I have the answer, so if you want, just post what you get and I'll confirm, though everything's there for you, so it's basically just algebra from this point on. Quote
Kuroida Posted November 11, 2010 Posted November 11, 2010 a) t= 20.69sec? b ) use equation d= V1t + 1/2a(t)^2 d= 10(20.69) + 1/2 (0) (20.69)^2 d= 206.9? *crosses fingers* >.< Quote
Unstream Posted November 11, 2010 Posted November 11, 2010 I think so. Either that or it's 25.69 seconds. Bah. I'm too tired to think any harder on this x_x I'll post again if I have an epiphany though :P Quote
Kuroida Posted November 11, 2010 Posted November 11, 2010 Oh right. Forgot to add 5. Either way THANK YOU SO MUCH!!! I don't believe in religion but you are the new god XD Quote
The Score in Blue Posted November 11, 2010 Posted November 11, 2010 Are we all discussing maths? My exam's in 7 days ah! Any study tips? Quote
Kuroida Posted November 11, 2010 Posted November 11, 2010 yeah. Avoid word problems at all costs -_- But what really helps me learn is by doing practice questions... And we were discussing physics. My exams aren't for a few more months....and I don't even have math this semester o.0 Good luck on your exams though! And I have to go to bed now. Unsteam I still can't thank you enough :P Quote
livvy Posted November 11, 2010 Posted November 11, 2010 Eep! I missed Physics help? But I love Physics! D= Still, glad Will could help you, Kuro. He's a smart one. ^_^ Quote
Wembly Posted November 11, 2010 Posted November 11, 2010 a) t= 20.69sec? b ) use equation d= V1t + 1/2a(t)^2 d= 10(20.69) + 1/2 (0) (20.69)^2 d= 206.9? *crosses fingers* >.< Yes, the part A is correct with 20.69 but for your distance equation your V1 is 0 since you are starting from rest and you were given the a=1.2 which you should have used to get the correct t since I haven't really looked at your stuff of what your did but moral of the story if you plug the right stuff in you should get a distance of 256.9 not 206.9 If you need more help in understanding stuff, let me know. Edit: Looking at it again, I guess you were plugging into your distance equation for A which I would not have written that way personally but none the less, your way is fine too but you forgot to add the initial 50m that A travels before B starts. Quote
CAV of Gang Green Posted November 11, 2010 Posted November 11, 2010 I excel in Science and US History. Too bad that my school has NEITHER. I have Global History and Physics. I know that Physics lead into Astronomy, but after Physics, I get Chemistry, and THAT'S IT. Everything else is Latin, Latin, English, Latin, Spanish, Latin, Latin, Math, Latin, Global History, Latin, Yoga, Skills, Art History (HATE IT), Latin, Latin, Latin. Oh, and did I mention Latin? Quote
Wembly Posted November 11, 2010 Posted November 11, 2010 How do you not have US history? Is that not a requirement to graduate high school in NY? Because in NJ at least, you have to pass US history 1 and 2 before you can graduate high school. Quote
Tyler. Posted November 11, 2010 Posted November 11, 2010 I stopped playing plants vs zombies to find a school discussion not participating, I HATE school <_< Quote
Wembly Posted November 11, 2010 Posted November 11, 2010 That took me entirely too long to comprehend what you meant there. I suppose it's past my bedtime. Quote
The Score in Blue Posted November 11, 2010 Posted November 11, 2010 Calc is so boring all this stuff about acceleration and velocity is doing my head in :( Quote
jumpingbeans Posted November 11, 2010 Posted November 11, 2010 I was finding it interesting.....though hard to understand. And Bex, Nova Scotia literally means New Scotland. Quote
Kuroida Posted November 11, 2010 Posted November 11, 2010 today I found out how to change my gender back! :D And US history is a optional course for me. I was going to take it because I needed a group one credit (history, geo, social sci or another language) but it was full -_- Apparantly they get a trip to DC Edit: Looking at it again, I guess you were plugging into your distance equation for A which I would not have written that way personally but none the less, your way is fine too but you forgot to add the initial 50m that A travels before B starts. Thanks for the input! Quote
jumpingbeans Posted November 11, 2010 Posted November 11, 2010 Awwww..... I was hoping you'd stay a boy forever. :P And I've just got Science, Math, French (I'm in immersion), Health, Band, etc. No different stuff for me. :( Does anyone here play an instrument? Quote
-Ryan Posted November 11, 2010 Posted November 11, 2010 Awwww..... I was hoping you'd stay a boy forever. :P So that' the first thing I read when I came to this page. Oh, the possibilities... Quote
jumpingbeans Posted November 11, 2010 Posted November 11, 2010 Now that you say it that way, it sounds odd. But that's not what I meant! Quote
-Ryan Posted November 11, 2010 Posted November 11, 2010 It does. It really does. I'm sure you didn't. ;) Quote
jumpingbeans Posted November 11, 2010 Posted November 11, 2010 Hey! That might hurt my feelings! *Goes off to cry in corner* Quote
CAV of Gang Green Posted November 11, 2010 Posted November 11, 2010 How do you not have US history? Is that not a requirement to graduate high school in NY? Because in NJ at least, you have to pass US history 1 and 2 before you can graduate high school. It IS a requirement. But I don't get US History until 3rd year. So instead I will be failing Global and Art History for the next 2 years. How I hate Art. And Art History. We also don't get health until 3rd year. I want to transfer out of my school so much... Quote
-Ryan Posted November 11, 2010 Posted November 11, 2010 -Hugs Jb- I'm so sorry! -start singing baby come back to me- -hugs CAV- That sucks. -whisper- Psssst! Come to my school! -Hugs Tyler- No real reason I just wanted to do that. :D Quote
jumpingbeans Posted November 11, 2010 Posted November 11, 2010 Art History? That sounds like my least favorite two subjects combined. I'd hate that. Edit: Ryan: It's okay. *sniff* Just don't do it again. *Hugs Ryan too* Quote
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