a train 350metres long is running at 72 km/hr. it crosses a bridge in 13 seconds. find the lenth of the bridge
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I think the length of the train is 150 m not 350m.
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Answer:
length of the bridge =90m
Step-by-step explanation:
we know that
distance =speed ×time
let bridge length be 'l'metres
speed =72×5/18=20mps
20=(350+l)/13
260=350+l
l=90m
hope it helps you if any doubt ask
Anonymous:
i neglected' negative' sign
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