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Patrick

Member

Registered: 25th Apr 02
Location: SE London
User status: Offline

30th May 03 at 09:12

If my car covers 1/8 of a mile in 9.8 seconds and I'm doing a speed of 73/74mph what would you say my 0-60mph time is approx obviously?

7. something?

Steve

Premium Member

Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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30th May 03 at 09:13

id say sumthing like 7.gay

Ditch

Member

Registered: 29th Nov 02
Location: St Albans Drives: JDM Celica GT4 WRC
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30th May 03 at 09:14

7.573 seconds

=

vibrio

Banned

Registered: 28th Feb 01
Location: POAH
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30th May 03 at 09:14

around high 7s

blebo

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Registered: 18th Apr 02
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30th May 03 at 09:29

S= Ut+0.5at2

Patrick

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Registered: 25th Apr 02
Location: SE London
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30th May 03 at 09:31

Thanks

Sam

Moderator
Premium Member

Registered: 24th Dec 99
Location: West Midlands
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30th May 03 at 09:32

blebo

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Registered: 18th Apr 02
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30th May 03 at 09:33

quote:
Originally posted by blebo
S= Ut+0.5at2

to caculate the velocity of a projectile

blebo

Member

Registered: 18th Apr 02
User status: Offline

30th May 03 at 09:34

But I get 0-60 in 8.9 seconds.....cant be right

beav

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Registered: 20th Aug 01
Location: Home-Ayrshire (Troon), Uni-St Andrews
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30th May 03 at 11:13

U cant calculate it, ur car may acclerate VERY fast to 60 then trundle to 73 or it may go slowly to 60 and fly to 73...those equations wont work because of this!

Tim

Site Administrator

Registered: 21st Apr 00
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30th May 03 at 11:15

Exactly... acceleration isn't constant.

Adam

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Registered: 1st May 01
Location: Hurstbourne Tarrant
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30th May 03 at 11:19

you also have breaks in the acceleration for gearchanges

Patrick

Member

Registered: 25th Apr 02
Location: SE London
User status: Offline

30th May 03 at 11:20

I think my 0-60mph will be pretty fast cos my 3rd gear is rubbish!

My second gear takes me to around 62mph but from then on there is a big lag in acceleration. Hence why I think my 0-60 would be between 6.9 - 7.2 secs

vibrio

Banned

Registered: 28th Feb 01
Location: POAH
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30th May 03 at 11:25

62 on the clock Pat is most likely 58-59 in real terms

blebo

Member

Registered: 18th Apr 02
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30th May 03 at 11:33

slightly more scientific than picking numbers out of fresh air though

Ojc

Member

Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
User status: Offline

30th May 03 at 11:52

9.8

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