Question

a train is running with a speed of 60 km per hour crosses a pole in 9 second what is the length of the train​

Answer 1

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 meter.

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 (s) and time (t) is related as

s=v×ts=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.

I n s t a g r a m

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