# Two trains A and B 100 km part are travelling towards each other with starting speed of 50 km/hr for both. The train A accelerating at 18?

Two trains A and B 100 km part are travelling towards each other with starting speed of 50 km/hr for both. The train A accelerating at 18 km/hr² and B decelerating at 18 km/hr². At what distance from the starting point of A, will they meet?

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- Pramod KumarLv 76 months agoFavourite answer
Let the train be meeting after time t at a distance of s km from the starting

point of A. then,

s = 50 t + (1/2) 18*t² ………….. (1)

And (100 - s) = 50 t - (1/2) 18*t² …………. (2)

Adding the two equations we get --

100 = 100 t

=====>> t = 1 hr and s = 59 km …………… Answers

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