Two trains A and B are approaching each other on a straight track, the former with a uniform velocity of 25 m/s and other with 15m/s, when they are 225 m a part brakes are simultaneously applied to both of them. The deceleration given by the brakes to thetrain B increases linearly with time by `0.3 m//s^(2)` every second, while the train A is given a uniform deceleration, (a)
What must be the minimum deceleration of the train A so that the trains do not collide ? (b) What is the time taken by the trains to come to stop ?
A. `5m//s^(2)`
B. `2.5m//s^(2)`
C. `1.5m//s^(2)`
D. `7.5m//s^(2)`
