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?

1 Answer

Relevance
  • 6 months ago
    Favorite 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

Still have questions? Get your answers by asking now.