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..........$sec$
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..........$sec$
$56$
$68$
$80 $
$92$
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..........$sec$
Total distance to be covered for crossing the bridge $=$ length of train $+$ length of bridge
$ = 150m + 850m = 1000m$
${\rm{Time }} = \frac{{{\rm{Distance }}}}{{{\rm{Velocity }}}} = \frac{{1000}}{{45 \times \frac{5}{{18}}}} = 80\;sec$
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