Question

in the context of motion, how is velocity defined?
the measure of how difficult it is to change an objects inertia
the total amount of matter contained within an object
the speed of an object in a specific direction
the total distance an object travels regardless of its starting point

Explanation:

Velocity is a vector quantity, which means it has both magnitude (speed) and a specific direction of motion. The other options describe different physical concepts: the first is related to force/inertia change, the second is mass, and the fourth is distance traveled.

Answer:

The speed of an object in a specific direction