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09-13-2009, 06:48 PM
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#26
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Join Date: Aug 2009
Location: South Dennis
Posts: 48
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Well, I just got locked out, just before I tried something I came up with... I just emailed the teacher to see if I can get another few tries... ugh  thanks anyway
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09-13-2009, 06:49 PM
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#27
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Join Date: Dec 2008
Location: NNJ
Posts: 1,489
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Quote:
Originally Posted by ljstella
Well, I just got locked out, just before I tried something I came up with... I just emailed the teacher to see if I can get another few tries... ugh thanks anyway |
whatd you try?
__________________
1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick 
2014 2LT Cruze 2.0 Turbo Diesel
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09-13-2009, 06:58 PM
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#28
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Join Date: Aug 2009
Location: South Dennis
Posts: 48
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Quote:
Originally Posted by 97camaro
whatd you try?
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I tried using Velocity Final squared is equal to Velocity Inital Squared plus two times the acceleration times displacement.
I got 0= V initial squared + 2(-10.0)(34.04)
V initial squared = 680.6881
V initial = 26.09
It didn't work... or maybe I'm doing it wrong...
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09-13-2009, 07:03 PM
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#29
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Join Date: Dec 2008
Location: NNJ
Posts: 1,489
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Quote:
Originally Posted by ljstella
I tried using Velocity Final squared is equal to Velocity Inital Squared plus two times the acceleration times displacement.
I got 0= V initial squared + 2(-10.0)(34.04)
V initial squared = 680.6881
V initial = 26.09
It didn't work... or maybe I'm doing it wrong...
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hmm well your lookin for the max velocity he can go right?
88 km/h = 24.444444444 m/s
so first you figure out how much distance his reaction takes (0.75s)
d = (v)(t) -> d = (24.4)(0.75) = 18.3m til he hits the brakes leaving 19.7m to stop yes?
__________________
1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick
2014 2LT Cruze 2.0 Turbo Diesel
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09-13-2009, 07:11 PM
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#30
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Join Date: Dec 2005
Location: Boston/North
Posts: 9,214
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Why are you guys doing this kid's HW?
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Quote:
Originally Posted by BonzoHansen
dumbass.
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09-13-2009, 07:15 PM
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#31
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Join Date: Dec 2008
Location: NNJ
Posts: 1,489
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Quote:
Originally Posted by Knipps
Why are you guys doing this kid's HW?
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i ... dont ... know .... lol but now i wanna know the right answer
__________________
1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick
2014 2LT Cruze 2.0 Turbo Diesel
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09-13-2009, 07:20 PM
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#32
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Join Date: Aug 2009
Location: South Dennis
Posts: 48
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I came up with 88km/h as something else in m/s...
I multiplied 88 by 60 to get km/s and then divided by 1000 (that's my error... I should have multiplied by 1000 to get m/s) but then I get something ridiculously huge... if I divide, I get 5.28 m/s and then multiply that by .75 and subtract the product from 38.0 to get 34.04m as the distance from when he starts to brake...
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09-13-2009, 07:33 PM
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#33
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Join Date: Dec 2008
Location: NNJ
Posts: 1,489
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Quote:
Originally Posted by ljstella
I came up with 88km/h as something else in m/s...
I multiplied 88 by 60 to get km/s and then divided by 1000 (that's my error... I should have multiplied by 1000 to get m/s) but then I get something ridiculously huge... if I divide, I get 5.28 m/s and then multiply that by .75 and subtract the product from 38.0 to get 34.04m as the distance from when he starts to brake...
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km/h -> m/s
x1000 then / 3600
__________________
1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick
2014 2LT Cruze 2.0 Turbo Diesel
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09-13-2009, 07:34 PM
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#34
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,938
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So this proved you all suck at physics.
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Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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09-13-2009, 07:36 PM
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#35
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Join Date: Aug 2009
Location: South Dennis
Posts: 48
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Quote:
Originally Posted by 97camaro
km/h -> m/s
x1000 then / 3600
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why 3600?
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09-13-2009, 07:41 PM
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#36
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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6.023 x 10^23
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09-13-2009, 07:41 PM
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#37
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Join Date: Dec 2008
Location: NNJ
Posts: 1,489
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Quote:
Originally Posted by ShowSomePromise
So this proved you all suck at physics.
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why?
__________________
1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick
2014 2LT Cruze 2.0 Turbo Diesel
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09-13-2009, 07:45 PM
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#38
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Join Date: Aug 2009
Location: South Dennis
Posts: 48
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Quote:
Originally Posted by WildBillyT
6.023 x 10^23
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Physics, not chemistry! Avogadro's number isn't going to help me!!
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09-13-2009, 08:54 PM
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#39
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Join Date: Mar 2008
Location: Somerset, NJ
Posts: 4,223
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he would end up in jail. speed limit is only 65.
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Jon
1999 Trans am WS6
1996 Corvette LT4 6 speed
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09-14-2009, 06:32 AM
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#40
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Avatar Abuser
Join Date: Aug 2004
Location: 08721-1716
Posts: 5,056
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Quote:
Originally Posted by ShowSomePromise
So this proved you all suck at physics.
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Quote:
Originally Posted by 97camaro
why?
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because you haven't come up with the right formula yet, which means if you do hit the answer (by some means, perhaps the russian's beaming method) it will be by pure luck, not because you have applied the right formula.
that's all physics is unless you are among the elite - then you get to try your own formulas and spend years proving/disproving them, supported, of course, by educational grants from the government and wealthy privateers... applying the right formula.
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JSFBOA
Save a life.
N = R* fp ne fl fi fc L
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09-14-2009, 08:42 AM
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#41
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by ShowSomePromise
So this proved you all suck at physics.
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No, the answer is 19.67 m/s. I posted Avegadro's number because I felt like busting balls- as he should really do his own homework so he doesn't get boned on a test.
I got it the same way 97Camaro did. 18.33m covered until the brakes are applied, 19.67m of distance left, equation will zero out when the initial velocity is ~19.83m/s. The only "ball buster" is how far they want the car to be from the wall to be considered "not hit". 0 is not really right IMO, because they would be exactly touching.
Last edited by WildBillyT; 09-14-2009 at 08:44 AM.
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09-14-2009, 10:09 AM
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#42
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MIR
Join Date: Jul 2005
Posts: 9,692
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Quote:
Originally Posted by WildBillyT
No, the answer is 19.67 m/s. I posted Avegadro's number because I felt like busting balls- as he should really do his own homework so he doesn't get boned on a test.
I got it the same way 97Camaro did. 18.33m covered until the brakes are applied, 19.67m of distance left, equation will zero out when the initial velocity is ~19.83m/s. The only "ball buster" is how far they want the car to be from the wall to be considered "not hit". 0 is not really right IMO, because they would be exactly touching.
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So 59 is NOT the answer? 
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09-14-2009, 10:13 AM
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#43
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by Tsar
So 59 is NOT the answer? |
No?
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09-14-2009, 10:13 AM
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#44
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Join Date: Dec 2008
Location: NNJ
Posts: 1,489
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Quote:
Originally Posted by jims69camaro
because you haven't come up with the right formula yet, which means if you do hit the answer (by some means, perhaps the russian's beaming method) it will be by pure luck, not because you have applied the right formula.
that's all physics is unless you are among the elite - then you get to try your own formulas and spend years proving/disproving them, supported, of course, by educational grants from the government and wealthy privateers... applying the right formula.
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orly? i used my cheat sheet from physics last year with all the kinematic equations and those are the 'right' formulas
__________________
1997 Camaro Z28 - 355 LT1, T56, CC503, LTs, ORY, Bald Eagle-back exhaust, !emissions, Lingenfelter CAI, EWP, !CAGS, BMR LCAs, UMI PHB, Koni Str.t/Koni SA, C5 Z06 front / LS1 F-body rear brake swap, factory hurst with short stick
2014 2LT Cruze 2.0 Turbo Diesel
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09-14-2009, 10:17 AM
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#45
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MIR
Join Date: Jul 2005
Posts: 9,692
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Quote:
Originally Posted by WildBillyT
No?
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Oh man, I'm so disappointed!
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09-14-2009, 10:27 AM
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#46
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by 97camaro
orly? i used my cheat sheet from physics last year with all the kinematic equations and those are the 'right' formulas |
LOL. I used the exact same website. Couldn't remember most of them.
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09-14-2009, 10:28 AM
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#47
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,938
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Did not figure in speed of light, fail.
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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09-14-2009, 10:31 AM
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#48
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Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
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Quote:
Originally Posted by ShowSomePromise
Did not figure in speed of light, fail.
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If you want we can help you determine the electrical resistance of a dead fuel pump.
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09-14-2009, 10:38 AM
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#49
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Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,938
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Prob pretty high. I would guess more than enough to melt those puny wires that feed it.
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
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09-14-2009, 10:53 AM
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#50
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Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,368
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wait, what motor?
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