Question

A train 100 meters long is movimg qith 50kmph crosses a traun 120 metres long ciming from opposite direction in 6seconds find speed of second traiin

Answer 1

Total distance covered in 6 seconds =100+120=220m=0.220km

Total time, t= 6/3600 hr

Now, let x be the speed of the train of 120m long.

Then, x+50=(0.220/6)/3600

⇒x=82 km/hr

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Answer 2

Answer:

Step-by-step explanation:

The sum of lengths of the trains is the distance the second train travels.

100+120m =220m=0.22km

Let speed of second train be x km/h

They are in opposite directions.

effective speed = x+50 km/h

Time = 6 seconds = 6/3600 seconds => 1/600 hours

d=rt

0.22=(x+50)*1/600

multiply by 600

0.22*600 =x+50

132=x+50

x=132-50

x=82 km/h