Its asking me for my Apple ID to download it. What the heck is that?

 

you have to set up an itunes account

 

i just ran a 9.5 at 189 mph with 1290hp with this app running in my pocket.

 

Need to work on that 60' a bit....

 

yea my shoes dont have much tread left, cant hook up.

 

That's the second green that went 9's this month - good work!!!

 

well i just made a pass with it. not a good enough pass to see its accuracy. but atleast it didnt give some outlandish number.

i just cruised into first with a 3.3 60ft, and i had to let off at 100 because i was on a main road. it said that i went 13.7 @ 90, pulled 1.2 g's acceleration, and had 365 hp.

im gonna go out in a few on a highway and see what happens. i wasnt about to launch and hit 120 on this road. the phone makes a noise when you can let off, and i let off, a few seconds went by and then it made the noise.

 

its supposed to be pretty good, my friend is going to get it and ill have it as soon as they fix all the bugs.

 

wow did you throw it out the window while you were driving

STevo

 

on foot

 

Noticed my quote in your sig. That's a first. Thanks.

 

my sister has an iphone, i used it once, after that i wanted to dropkick into the pool

 

just dloaded it. i've spent more money on a bad haircut so it's worth a try

 

LOL...try to explain what you are doing to a cop IF AND WHEN you get pulled over...I hope you don't but just sayin...

 

accelerometers measure acceleration. if you integrate acceleration over time you get velocity. if you integrate velocity over time you get position. once your position is 1/4 of a mile, you stop the timer and you'll know your 1/4mile time. acceleration G's are simply what the sensor itself reads. and the velocity after the 1/4 is the velocity you've reached at the 1/4mile.

the accelerometer itself is most likely a 3 axis accelerometer (like a wii-mote). if you hold the phone flat, it knows which way is down by the acceleration of gravity (which will be 1g in the down axis). the other two axis will be zero assuming you are not accelerating. if you start driving forward, the accelerometer in the forward/backward direction will begin sensing acceleration based off how fast you start moving. now you have two axis readking acceleration. last, if you turn hard, the side to side accelerometer will read acceleration as well and now all 3 axis of your phone are reading acceleration.

if you tilt the phone a bit before you start, the phone should be able to calibrate based off all 3 axis, knowing that gravity will always be 1G down (for instance if you turn the phone 90deg sideways, the left/right accelerometer will now be pointed down, and will read 1G.