The motor of an electric train can give it an acceleration of 1 ms−2 and brakes can give a negative acceleration of 3 ms−2. The shortest time in which the train can make a trip between the two stations 1215 m apart is

Question : The motor of an electric train can give it an acceleration of 1 ms−2 and brakes can give a negative acceleration of 3 ms−2. The shortest time in which the train can make a trip between the two stations 1215 m apart is