6. a. Define the term acceleration /2marks b. A bus changes its speed from 180 m/s to rest in 10m/s. Calculate: i. deceleration of the bus ii. Displacement of t

6. a. Define the term acceleration /2marks b. A bus changes its speed from 180 m/s to rest in 10m/s. Calculate: i. deceleration of the bus ii. Displacement of the bus​