Question

α trαín ís runníng αt α spєєd σf 84km/hr crσssєs αn єlєctríc pσlє ín 9 sєc. thє lєngth σf thє trαín ís.

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Answer 1

Explanation:

length of the train distance = distance covered by the train

=84×5/18×9 m

=210m

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Answer 2

Answer:

heyy mate..!!

Explanation:

90 km per hour is 25 metre per second.

1km =1000 m

and 1 hour =60min = 3600 seconds.

So to convert 90km/h into m/second...

90*(1000/3600)= 25 m/s (approx)

So if the train takes 10 seconds to cross a pole while running at 90 km/h then the length of the train is 25 * 10 which is 250 m.