Here's a breakdown:

* Momentum: A measure of the amount of motion an object has. It's a vector quantity, meaning it has both magnitude (how much) and direction.

* Mass: The amount of matter in an object.

* Velocity: The rate of change of an object's position, including both speed and direction.

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

Units: The standard unit for momentum is the kilogram-meter per second (kg*m/s).

Importance: Momentum is a fundamental concept in physics, particularly in the study of collisions and conservation laws. The law of conservation of momentum states that the total momentum of a closed system remains constant.