Question

what is acceleration? the rate at which an object covers distance. the measure of the change of velocity over time. the distance covered in a specific direction. the total path length traveled by an object.

Explanation:

Acceleration is defined as the measure of the change of velocity over time. Velocity is a vector quantity (has both magnitude and direction), and acceleration quantifies how quickly this velocity changes. The first option describes speed (rate of covering distance), the third describes displacement (distance in a specific direction), and the fourth describes total path length (distance).

Answer:

The measure of the change of velocity over time.