What is the measure of a change in a objects velocity?

Acceleration is a change in velocity, either an increase in speed or a change in direction. Acceleration measures the rate of change of an object's velocity. Average acceleration is calculated by dividing the change in velocity over the time.

let that person have a turn to speak : )

i just calculated it all out, and not including weekends, and all the different days off. as of this school year (2018-2019) students are spending 2198 hours in school this year