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, , where is the speed expressed in km/h. Assuming that the length of each car is 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.