OldTimeyMedicine

OldTimeyMedicine t1_j1ezp6r wrote

Setting aside speedos for a moment, the Car Speed would be relative to the frame of reference, or more appropriately, the rate at which the wheels are turning since the speedometer is measuring that based on the wheel rotation. So if the car is drifting, the speedometer will present the speed according to wheel speed rather than the resolved components of the speed vectors, where the datum isn't defined here.

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