The measure of motion of a body equal to the product of its mass and velocity is called momentum.

Here's a breakdown:

* Momentum: A measure of how much motion an object has.

* Mass: The amount of matter in an object.

* Velocity: The speed and direction of an object.

Formula for Momentum:

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

Units:

* Momentum: kg·m/s (kilogram meters per second)

* Mass: kg (kilograms)

* Velocity: m/s (meters per second)

Key Points:

* Momentum is a vector quantity, meaning it has both magnitude and direction.

* The direction of momentum is the same as the direction of velocity.

* The principle of conservation of momentum states that the total momentum of a closed system remains constant.

Let me know if you have any other questions!