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A train running at the speed of 120km/hr crosses a pole in 12 seconds. What is the length of the train

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Here length means distance of train

distance=speed × time

distance=speed × time

Time taken pass a pole totally = 12 sec = 12/60 min = 1/5 minutes

Length of the train = distance covered in 12 seconds

⇒ distance = speed × time

⇒d = 120 × 1/5

⇒d = 24

∴distance covered = 24 km

Length of the train = 24km