A car with wheels of radius R moves at speed v along a horizontal road, with v2 > Rg, where g is the acceleration due to gravity. To what maximum height h can dirt falling off the wheels of a car be thrown upward? Indicate the position of the point on the wheel tire from which, at a given vehicle speed, dirt will be thrown the highest. Do not take into account the air resistance to the movement of thrown upward dirt.

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