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Explanation
“A train 360 meter long is running at a speed of 45 km/h”.
This statement shows speed is needed to convert into m/sec because train of length is given which is also in meter.
To calculate the time; speed distance formula will be used,
Time = Distance/Speed
Considering the total length = 360 + 140 = 500 meter
To Find
Time = ?
Solution
Given speed = 45 km/h
Speed in m/sec = (45 x 1000)/3600
Speed in m/sec = 12.5 m/sec
Total length = 360 + 140 = 500 m
Now,
Time = distance/speed
Time = 500/12.5
Time = 40 seconds answer
Conclusion
A train 360 meter long is running at a speed of 45 km/h. In 40 seconds it will pass a bridge 140 meter long.
