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karthik tejaswi Grade: 12
        

Two trains(both are 400m in lenght) are travelling on two parallel tracks with the same speed 72kmph.train A is ahead of train B. Now train B driver decides to overtake train A and accelarates at 1m/s2


and manages to overtake in 50 sec.Now calculate the initial seperation between the trains before the train B's accelaration?


 

7 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear karthik


let the initial seperation = x


In train A frame of reference .velocity of train A is zero.initia velocity of train B is zero.


to overtake train A ,train A has to cover L+800 distance.


so


 S =1/2at2


L+800 =1/2 *1 * (50)2


L=450 m


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Badiuddin

7 years ago
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