a train running at the speed of 60km/he crosses a pole in 9 seconds. what is the length of the train
Answer (1)
24th Dec, 2021
Hello,
Given data:
Speed (v) of train = 60 km/hr.
And it takes 9 seconds to cross a pole.
Therefore, time (t) = 9 seconds.
Now as we know 1 km = 1000 meters.
And 1 hr. = 3600 sec.
So 1(km/hr.) = (1000/3600) = (5/18) meter/seconds
So 60 km/hr. =
60×518=50360×518=503
m/sec.
So the speed (v) of the train =
503503
m/sec.
Now as we know speed (v), distance (d) and time (t) is related as
d = v×t
Units.
Now let the length of the train be l m.
⇒l=v×t⇒l=v×t
Meters.
Now substitute the values in above equation we have,
⇒l=503×9=150⇒l=503×9=150
Meters.
So this is the required answer.
I hope this would help you.
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