MathDB
a caravan of cars circulates

Source: Spanish Mathematical Olympiad 1967 P7

December 4, 2022
algebra

Problem Statement

On a road a caravan of cars circulates, all at the same speed, maintaining the minimum separation between one and the other indicated by the Code of Circulation. This separation is, in meters, u2100\frac{u^2}{100}, where uu is the speed expressed in km/h. Assuming that the length of each car is 2.892.89 m, calculate the speed at which they must circulate so that the capacity of traffic is maximum, that is, so that in a fixed time the maximum number pass of vehicles at a point on the road.