A train passes through a station at a speed of 108 km/h. The length of the station is 120 m. The train takes 7 seconds to completely pass through the station. Work out the lengt…

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asked Jan 17, 2024 219k views

1 Answer

Rross · Answer 1 · 2024-01-21T17:04:32+0000

Answer:

V = 108 km/hr = 108 * 1000 m / 3600 s = 30 m/s

V = speed of train = 30 m/s

(L + 120) m / 7 sec = 30 m/s

When front of train reaches station, back of train must travel L + 120 m to clear the station

S = V / t

(L + 120) / 7 = 30

L = 210 - 120 = 90 m length of train