What is the change in velocity during the time interval from 4.75 s to 6.25 s?
What is the change in velocity during the time interval from 6.25 s to 18.75 s?
If the initial velocity is -14 m/s, then what is the velocity at time 21.75 s?
What is the average acceleration during the time interval from 6.25 s to 25 s?