Blonk Iconoclast Donating Members 4,330 Member For: 20y 6m 22d Gender: Male Location: CH Posted 06/04/05 04:35 PM Share Posted 06/04/05 04:35 PM The SI units I will use are Kg = Mass - SI - Kilogram -Derived from a peice of alloy kept in Paris (not hilton) which ALL accurate measurements of mass are based....,.m = Length -SI- metre- Originally one ten millionth of the distancefrom the poles to the equator, found to be innacurate and is now measured in terms of the wave lenght of a krypton isotope.s = time - SI second- Originally 1/86400 of the mean solar diary, is now accurately defined in terms of the period of vibration of the caesium atoms.Mass, length and time are called fundimental quantities......Quantities built from here are called derived quantities.........You will be familiar with speed = distance/timeor speed = distance divided by time ( for you dumb people that dont know what / means)Area is usually measured length by lengthTherefore Speed = m/sAcceleration = (m/s)s or m/s ²Force = Mass x acceleration = kg m/s²Work = force x distance (kg m/s²)m or kg m²/s²Power = work over time (kg m²/s²)s or kg m²/s³Momentum = Mass x speed – kg m /sUniformly accelerated linear motion (drag racing)s=1/2 (v+u)tTime = 0.5 x terminal velocity plus initial velocity multiplied by timeA = (v-u)/tAcceleration = velocity minus initial velocity divided by times = ut + ½ at²Handy for accelerationv² = u² +2asMomentum (this is why your brakes don’t work)F = maForce = mass x accelerationOK… Quick question…. Easy one….If you are travelling at 36km/h(10 m/s) and you want to accelerate to 100km/h (27.7 m/s) how much force do you need to apply if you want to do it in 3 seconds in an 1660kg XR6T…OK t=3v=27.7 (=100km/h remember we have to work in m/s)u=10m=1660Force = mass x accelerationforceF=ma Mass = 1660 AccelerationA = (v-u)/tV=27.7-10/tV=17.7/tT=317.7/3=a=5.9 m/s²Force = mass x accelerationabcWork it out…….my brain hurts now I am going to bed....need help keep this thread alive and we can answer our own dumb questions Link to comment https://www.fordxr6turbo.com/forum/topic/16806-calculations/ Share on other sites More sharing options...
eatV8 Artificially Aspirated Member 951 Member For: 21y 3m 7d Gender: Male Location: Brisbane Posted 06/04/05 05:18 PM Share Posted 06/04/05 05:18 PM (edited) Edited 06/04/05 05:30 PM by eatV8 Link to comment https://www.fordxr6turbo.com/forum/topic/16806-calculations/#findComment-239958 Share on other sites More sharing options...
YOOT Member 1,201 Member For: 21y 9m 30d Location: Birkdale Posted 06/04/05 09:31 PM Share Posted 06/04/05 09:31 PM I did all this in grade 10. Link to comment https://www.fordxr6turbo.com/forum/topic/16806-calculations/#findComment-239973 Share on other sites More sharing options...
ktford FORD FORD FORD Donating Members 9,390 Member For: 22y 1m 1d Gender: Male Location: Victoria Point In Brissy's eastern side Posted 06/04/05 09:57 PM Share Posted 06/04/05 09:57 PM Not bad for a roooferScotty Link to comment https://www.fordxr6turbo.com/forum/topic/16806-calculations/#findComment-239981 Share on other sites More sharing options...
xr6t ute Member 442 Member For: 21y 1d Gender: Male Location: Gold Coast Posted 06/04/05 10:21 PM Share Posted 06/04/05 10:21 PM This is why I left school after grade 10 and got a job Shane Link to comment https://www.fordxr6turbo.com/forum/topic/16806-calculations/#findComment-239984 Share on other sites More sharing options...
siccar Member 235 Member For: 21y 17d Gender: Male Location: Back seat...... waiting for the babes Posted 07/04/05 12:22 AM Share Posted 07/04/05 12:22 AM My dumbess x my confusion2 = me go get more beer now...... Link to comment https://www.fordxr6turbo.com/forum/topic/16806-calculations/#findComment-240010 Share on other sites More sharing options...
Turbofalke Member 658 Member For: 20y 5m 3d Location: Mexico Posted 07/04/05 12:41 AM Share Posted 07/04/05 12:41 AM (edited) To complete your calc you also need to know:-Coefficient of friction on the wheels,-Torque which will also include assuptions on wheel radius,Slop on which your car is on otherwise you will need to make allowance for gravity-Air resistance (drag)probably many other factors but my head hurts LOL Edited 07/04/05 12:41 AM by Turbofalke Link to comment https://www.fordxr6turbo.com/forum/topic/16806-calculations/#findComment-240018 Share on other sites More sharing options...
eatV8 Artificially Aspirated Member 951 Member For: 21y 3m 7d Gender: Male Location: Brisbane Posted 07/04/05 02:49 AM Share Posted 07/04/05 02:49 AM Turbofalke said: To complete your calc you also need to know:-Coefficient of friction on the wheels,-Torque which will also include assuptions on wheel radius,Slop on which your car is on otherwise you will need to make allowance for gravity-Air resistance (drag)probably many other factors but my head hurts LOL<{POST_SNAPBACK}> I am glad I am not the only one... I started to write but could not be bothered. However I will add some more... Traction of tyres? would they instantly hook up? I know a few forum members can break traction at those speeds with ease. Also are you assuming in your calculation the XR6T in question would make its maximum power from idle to redline? Link to comment https://www.fordxr6turbo.com/forum/topic/16806-calculations/#findComment-240066 Share on other sites More sharing options...
Blown BA In Your Face Member 6,195 Member For: 22y 1m 9d Gender: Male Location: Peninsula Posted 07/04/05 06:32 AM Share Posted 07/04/05 06:32 AM rednut99 said: I did all this in grade 10.<{POST_SNAPBACK}>And did you pass Link to comment https://www.fordxr6turbo.com/forum/topic/16806-calculations/#findComment-240130 Share on other sites More sharing options...
YOOT Member 1,201 Member For: 21y 9m 30d Location: Birkdale Posted 07/04/05 07:03 AM Share Posted 07/04/05 07:03 AM Blown BA said: rednut99 said: I did all this in grade 10.<{POST_SNAPBACK}>And did you pass <{POST_SNAPBACK}>Sure did, then when I went to uni I ended up having to do all the physics from hi-school again in 1 semester. So I've done it all twice! Link to comment https://www.fordxr6turbo.com/forum/topic/16806-calculations/#findComment-240141 Share on other sites More sharing options...
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