Two trains of lengths 160 meters and 140 meters are moving in opposite directions at 55 km/h and 65 km/h, respectively. Find the time taken by them to cross each other completely.
9 seconds
When two trains move in opposite directions, their relative speed is the sum of their speeds.
Relative speed \(= 55 + 65 = 120\) km/h.
Convert to m/s: \(120 \times \frac{5}{18} = \frac{100}{3}\) m/s.
Total distance to be covered while crossing \(= 160 + 140 = 300\) m.
Time \(= \frac{300}{\frac{100}{3}} = 300 \times \frac{3}{100} = 9\) seconds.
Hence, the trains take 9 seconds to cross each other completely.
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Important Questions from Problem on Trains
Eight railway stations A, B, C, D, E, F, G and H are connected either by two-way passages or one-way passages. One-way passages are from C to A, E to G, B to F, D to H, G to C, E to C and H to G. Two-way passages are between A and E, G and B, F and D, and E and D.
If the route between G and C is closed, which one of the following stations need not be passed through while travelling from H to C?
A daily train is to be introduced between station A and station B starting from each end at 6 AM and the journey is to be completed in 42 hours. What is the number of trains needed in order to maintain the Shuttle Service?
A train with a uniform speed passes a 122 meters long platform in 17 seconds and a 210 meters long bridge in 25 seconds. The speed of the train is:
How long does a train 153 meters long running at the rate of 90 kmph take to cross a bridge 622 meters in length?
A train passes a 360 metre long platform in 40 seconds and a man standing on the platform in 16 seconds. The speed of the train is:
