Question : A metro train starts from rest and in five seconds achieves 108 kmh−1. After that it moves with constant velocity and comes to rest after travelling 45 m with uniform retardation. If total distance travelled is 395 m, find total time of travelling
(A) 12.2 s
(B) 15.3 s
(C) 9 s
(D) 17.2 s
Answer : option (D)
Solution :

