-1 The driver of train A moving at a speed of 30 ms sights another train B moving on the same track at a speed of 10 ms - in the same direction. He immedi- ately applies brakes and achieves a uniform retarda- tion of 2 ms . To avoid collision, what must be the minimum distance between trains A and B when the -2 driver of A sights B?

-1 The driver of train A moving at a speed of 30 ms sights another train B moving on the same track at a speed of 10 ms - in the same direction. He immedi- ately applies brakes and achieves a uniform retarda- tion of 2 ms . To avoid collision, what must be the minimum distance between trains A and B when the -2 driver of A sights B?