Question

How long will a train 210m long take to clear a platform 165 m long, if its speed is 50 Km/hr?

Answer 1

Length of the train= 210  m  Since the stationary object is not negligible.  Therefore, distance travelled= length of the train + length of the platform = 210 + 165 m = 375 m  Since, the speed = 50 km/hr i.e.   125/9 m/s and distance= 375 m  Time = Distance / Speed  Time = 375 × 9 /125 Time = 27 sec