Quote:
Originally Posted by newtonsfirstlaw
17. Multiply the two number obtained in step 15 and 16. Should be a smaller number yet, even closer to zero. This gives you area/pixels.
17. Multiply the number obtained in 17 by the pixel count obtained in 13. This will give you the frontal area of your car in whatever units you were using.
Now that you have a very, very accurate frontal area of the car, you can compute your drag coefficient more accurately, once you have CdA (which the coast down test will give you).
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Perhaps fix the original post, #18 is marked as #17. Thanks for the guide.