Two trucks are moving in a straight line towards each other at initial velocities `u_(1)` and `u_(2)` and with constant retardations `a_(1)` and `a_(2)`. If the initial separation between them is `d`, find the minimum value of `d` for no collision.

Answer

`[((v_(1)+v_(2))^(2))/(2(a_(1) + a_(2)))]`