Question

.In what time will a 100 metre long train running with a speed of 50 km/hr cross a pillar

Options:
1) 7.0 sec
2) 72 sec
3) 7.2 sec
4) 70 sec

Answer 1

Hello friend...!!!

According to your question we should calculate the time taken by the train to cross the pillar.

We knew,

Speed = distance / time

Time = distance / speed

Here,

Distance = 100 m

Speed =
50km/hr = 50 X 1000 / 3600 m/s

Therefore,

Time = 100 X 3600 / 50 X 1000

Therefore,

Time = 7.2 seconds.

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The correct answer is option ' C '

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Hope it helps...!!!