Question

How long will a train, 120 m long, take to clear a platform, 130 m long, if its
speed is 50 km/hr?
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Answer 1

Step-by-step explanation:

Length of the train=120 m.

Since the stationary object is not negligible.

Therefore, distance travelled= length of the train + length of the platform = 120+130 =250m

Since, the speed = 50 km/hr and distance= 250 m or 25/100 km

I.e. time= distance / speed = (25/100)/50 = 1/200 hrs or 18 seconds

hope this answers your question :)