As a car passes the point A on a straight road, its speed is 10 m/s. The car moves with constant acceleration a m/s2 along the road for T seconds until it reaches the point B, where its speed is v m/s. The car travels at this speed for a further 10 seconds, when it reaches the point C. From C it travels for a further T seconds with constant acceleration 3a m/s2 until it reaches a speed of 20 m/s at the point D. Choose the correct option(s).
[Given that the distance between A and D is 675 m]