Two cars leave one after the other and travel with and acceleration of 0.4ms−2 . Two minutes after the departure of the first car, the distance between them becomes 1.90 km. The time interval between their departures is

Two cars leave one after the other and travel with and acceleration of 0.4ms−2 . Two minutes after the departure of the first car, the distance between them becomes 1.90 km. The time interval between their departures is

Question : Two cars leave one after the other and travel with and acceleration of 0.4ms−2 . Two minutes after the departure of the first car, the distance between them becomes 1.90 km. The time interval between their departures is