What is the speed of a 150 m long train crossing a bridge of length 250 m in 25 seconds?

17 m/s

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15 m/s

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16 m/s

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14 m/s

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Solution

The correct option is C
16 m/s

Total distance the train has to cover = Length of the train + Length of the bridge = 150 m + 250 m = 400 m

Total time taken = 25 s

Hence, speed = $\frac{T o t a l D i s t a n c e}{T o t a l T i m e}$ = $\frac{400 m}{25 s}$ = 16 m/s

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