The train will pass a bridge in 40 seconds.
<h3>What is the distance?</h3>
Distance is defined as the product of speed and time.
Given that A train 360 m long is running at a speed of 45 km/hr.
Speed of train = 45 km/hr.
And it passes a bridge 140 m long.
Length of train = 360 meters
Since 1 km = 1000 meters.
and 1 hour = 3600 seconds
we have to determine the length of the train
So 1(km/hr.) = (1000/3600) = (26/72) meter/seconds
45 km/hr = 45 ×5/18 = 25/2 meter per second
So the speed of the train = 25/2 meters per second
Total distance to be covered = (360+140)m = 500m.
So time will it pass a bridge = distance/speed
Substitute the values of distance and speed in the above formula,
⇒ 500/(25/2)
⇒ 500×2/25
⇒ 40 seconds
Hence, the train will pass a bridge in 40 seconds.
Learn more about the distance here:
brainly.com/question/13269893
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