A 100 m long train is going at a speed of 60 Km/hr. It will cross a 140 m long railway bridge in how much seconds?
Answer & explanation
Correct answer: option 2
Speed = \(\frac{Distance }{Time }\)
60 x \(\frac{ 5}{18 }\) = \(\frac{\text{100 + 140} }{Time }\)
\(\frac{ 50}{3 }\) = \(\frac{\text{240} }{Time }\)
Time = \(\frac{\text{240 x 3} }{50 }\)
Time = 14.4 seconds