Speedometer of a newer Mustang reads "Ground Speed"Submitted by egordoniv t3_ztnoml in mildlyinteresting
Schroedinbug t1_j1f1tjp wrote
Reply to comment by OldTimeyMedicine in Speedometer of a newer Mustang reads "Ground Speed" by egordoniv
More like wheel speed. Not ground speed due to things like drifting or dyno, not air speed due to wind, not car speed as you can lock the brakes up and it'll show zero while sliding into the sunset at speed. GPS speed would be closer to "car speed", but there are still issues with z-axis movement.
OldTimeyMedicine t1_j1f2nqf wrote
Yes, depends on the frame of reference, choice of datum
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