How long does a train 75 m long moving at 60 km/hr take to pass another train 100 m long moving at 65 km/hr in the same and opposite direction ? Please dont tell rubbish answers. Or else I am gonna report.
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Answer:
0.72 sec.
Step-by-step explanation:
In same direction, net speed = 65-60 = 5 km/hr = 5×1000/3600 m/s = 25/18 m/s
Time taken = (75+100)/(25/18) = 175×18/25 =126 sec = 2 mins 6 secs
In opposite direction, net speed = 65+60 =125 km/hr = 125×1000/3600 m/s = 625/18 m/s
Time taken = (100-75)/(625/18) = 25×18/625 = 18/25 =0.72 sec
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