A train 270 m long is moving at a speed of 25 km/hr. it will cross a man coming from the opposite direction at a speed of 2 km per hour in :
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Answer:
36 seconds.
Explanation:
The relative speed of the train will be the sum of the speeds of the train and the man.
We will add them because they are moving in the opposite direction.
The relative speed of the train is 25+2=27km/h.
We will convert this to m/sec because the distance is in metres.
27×1000/3600 = 15/2 m/sec.
Time is equal to distance upon speed.
Time = 270÷(15/2).
Time = 270×2/15.
Time = 36 seconds.
The train will take 36 seconds to cross the man.
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