2025 IGCSE Additional Mathematics October/November 0606/13 Q4

The velocity–time graph represents the motion of a particle moving in a straight line.

The acceleration during the first \(T\) seconds of the motion is \(2\text{ m s}^{-2}\).

The total distance travelled is 27 m.

1. Calculate \(T\).[4]
2. Calculate the acceleration during the last 4 seconds of the motion.[2]