A car moves with constant acceleration along a straight horizontal road. The car passes the point \(A\) with speed \(5 \text{ m s}^{-1}\) and \(4 \text{ s}\) later it passes the point \(B\), where \(AB = 50\text{m}\).
- Find the acceleration of the car. [3]
When the car passes the point \(C\), it has speed \(30 \text{ m s}^{-1}\).
- Find the distance \(AC\). [3]