Ared train traveling at 72 km/hr and a green train traveling at 144 km/hr are headed toward one another along a straight level track. when they are 950 meters apart, each enginneer sees the other's train and applies the brakes. the brakes decelerate each train at the rate of 2.0 m/s^2. is there a colllision? if so, what is the speed of each train at impact? if not, what is the separtion between the trains when they stop?