Question

a train 175m long crosses a lamp post in 10 second. find the speed of the train​

Answer 1

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A 175 m long train crosses a man walking at a speed of 9 km/h in the opposite direction in 10 sec. What is the speed of the train (in km/h)?

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Given:—

Length of the train:— 175 m

Man walking at a speed of 9 km/h in the opposite direction.

Train crosses the man in 10 sec. I.e 1/ 360 hr

Question:— what is the speed of train ( in km/h )

Let x be the speed of train in km/h

Man's sipped 9 km/h

Relative speed of the train ( x + 9 ) km/h

Time x speed = Distance

1 / 360 x ( x + 9 ) km = 175 m

x = ( 175 x 360) — 9000

x = 54,000 m/he

Answer:— Speed of the train :— 54 km/hr

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