Quote:
Originally Posted by j-c-c
You omitted while you were in the act of squatting, the scale would also register less than 200lbs, and BTW, your mass never changed.
|
But the car isn't actually moving forward yet at that point. It squats and stores that energy while the front tires are still stationary.
In pro level drag racing you get a .400 sec delay from when the yellow lights go to when the green (or red) light goes (.500 secs for amateur) So the car "starts" before it actually leaves the beam which is on the front wheel. Many tracks have now adjust the system so it shows .000 being a perfect reaction time but it's actually just using the .5 or .4 sec delay and subtracting it out. I guess it was too confusing to call a .400 or .500 reaction time perfect even though if it were any faster it would mean a red light disqualification.
Then there is the whole matter of rollout where technically the whole car can travel a foot before the tire clears the starting beam and a red or green light is determined.