2 A particle travels with constant acceleration along a straight line. A and B are points on this line 8 m apart. The motion of the particle is as follows.

• Initially it is at A.
• After 32 s it is at B .
• When it is at B its speed is \(2.25 \mathrm {~m} \mathrm {~s} ^ { - 1 }\) and it is moving away from A .

In either order, calculate the acceleration and the initial velocity of the particle, making the directions clear.