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Two trains of length 125 m each are coming from opposite directions. If the speeds of 2 trains are 18 m/s and 22 m/s, then find the time in which 2 trains will cross each other.1. 25/4 secs2. 5 secs3. 48 secs4. 7 secs |
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Answer» Correct Answer - Option 1 : 25/4 secs Given: Length of each trains = 125 m Speed of train 1 = 18 m/s Speed of train 2 = 22 m/s Concept Used: When 2 trains move in the opposite direction, the relative speed is the sum of their speeds. Formula Used: Speed = Distance/Time Calculations: Let the time after which 2 trains will cross each other be t secs. (18 + 22) = (125 + 125)/t ⇒ t = 250/40 ⇒ t = 25/4 secs ∴ The time in which 2 trains will cross each other is 25/4 secs. |
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