Find the length of the bridge which a train 130 m long, travelling at 45 kmph, can cross in 30 seconds
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length of the train=130m
speed=45kmph=45000/3600=12.5m per sec=25/2m per sec
1 sec =25/2 m
30 sec=25/2*30 =375 m
hope this will help u and give thanks and mark brainliest ans plzzzz....
speed=45kmph=45000/3600=12.5m per sec=25/2m per sec
1 sec =25/2 m
30 sec=25/2*30 =375 m
hope this will help u and give thanks and mark brainliest ans plzzzz....
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