Question

how long will a train 120 metre long take a clear a platform 130 metre long if its speed is 50 km per hour

Answer 1

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 hrsor 18 seconds.

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