The measure of an object's mass and velocity is called momentum.

Here's why:

* Mass represents the amount of matter in an object.

* Velocity represents the object's speed and direction.

Momentum is a vector quantity, meaning it has both magnitude (amount) and direction. It is calculated by multiplying an object's mass by its velocity:

Momentum (p) = Mass (m) x Velocity (v)

Momentum is a fundamental concept in physics, especially in the study of collisions and conservation laws.