Question

19. A train is running at a speed of 90 km/hr. If it crosses a signal in 10 seconds. Find
the length of the train in metres.​

Answer 1

Answer:

250m

Step-by-step 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.

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Answer 2

Answer:

250m

Step-by-step explanation:

Speed of train =90km/h=90*5/18=25m/sec

time to cross the signal=10 sec

Distance covered by train =speedxtime=25*10=250m

(Because distance covered by train=train length)

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