Answer the following question given this paragraph: 

Acceleration is a measure of the change in velocity of a moving object. It shows how quickly velocity changes. Acceleration may reflect a change in speed, a change in direction, or both. Because acceleration includes both a size (speed) and direction, it is a vector.


Q: What is the measure of change in velocity of a moving object?

 Choices:

- transmission

- vibration

- kinetic energy

- acceleration

A:
acceleration
