a train 50m long passes over a bridge at a speed of 30km/h. if it takes 36s to cross the bridge the length of the bridge will be
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30km/h = 30×5/18=25/3 m/s
Total length cover = speed ×time =25/3×36=300 meter
length of the bridge will be = 300-50=250m
Total length cover = speed ×time =25/3×36=300 meter
length of the bridge will be = 300-50=250m
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ANSWER-
Let the length of bridge be x m
length of train = 50m
distance covered by train = (50+x) m
speed = 30km/h => 30×5/18 => 25/3 m/s
time taken = 36 s
we know that ,
speed=distance/time
distance = Speed × time
50+x = 25/3×36
x = 300-50 => 250m
hope this helps
Let the length of bridge be x m
length of train = 50m
distance covered by train = (50+x) m
speed = 30km/h => 30×5/18 => 25/3 m/s
time taken = 36 s
we know that ,
speed=distance/time
distance = Speed × time
50+x = 25/3×36
x = 300-50 => 250m
hope this helps
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