A 100 m long train is moving with a uniform velocity of 45 km/hr. The time taken by the train to cross a bridge of length 1 km is

58 s

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68 s

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78 s

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88 s

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Solution

The correct option is D 88 s
Length of train = 100 m

Velocity of train = 45 km/hr = $45 \times \frac{5}{18} = 12.5 m / s$

Length of bridge = 1 km = 1000 m

$∴$ Total length covered by train = 1100 m.

Time taken by train to cross the bridge = $\frac{1100}{12.5} = 88 s e c$

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Similar questions

A $150 m$ long train is moving with a uniform velocity of $45 k m / h r$ . The time taken by the train to cross a bridge of length $850 m$ is:

A 150 m long train is moving with a uniform velocity of 45 km/h. The time taken by the train to cross a bridge of length 850 meters is

150 m

45 km/h

850 m

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