1.1. A snooker ball is struck so that it travels in a straight line along the length of a table, rebounds from a cushion and then rolls back towards its starting point.

Figure 1 shows the velocity–time graph for the ball.

Velocity $v$is measured in metres per second and time $t$ is measured in seconds.

Calculate, in metres per second, the reduction in the ball’s speed as a result of the impact with the cushion.

1.2. Calculate the acceleration of the snooker ball before it hits the cushion.

1.3. Describe the acceleration, the velocity, and the speed of the ball between $t=0.8$ and $t=2.3$.

You do not need to calculate any numerical values.

1.4. Find the final displacement of the ball from its starting position.