How should the car move for a certain period of time so that the speedometer

How should the car move for a certain period of time so that the speedometer can determine the modulus of movement made by the car during this period of time?

Only if the car moves in a straight line (make a straight line) in a constant direction for a certain period of time, the displacement vector will be equal to the distance traveled. In any other case, the displacement vector will be equal to the sum of the vectors of successive displacements of the car and it will be impossible to determine it by the speedometer.



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