p = mv

where:

* p is momentum

* m is mass

* v is velocity

Explanation:

* Momentum is a measure of an object's motion, taking into account both its mass and velocity. It is a vector quantity, meaning it has both magnitude and direction.

* Mass is a measure of the amount of matter in an object.

* Velocity is the rate of change of an object's position over time, and includes both speed and direction.

Key points to remember:

* Momentum is directly proportional to both mass and velocity. This means that a heavier object or an object moving faster will have more momentum.

* Momentum is conserved in a closed system, meaning the total momentum of the system remains constant.

* The unit of momentum is kilogram-meters per second (kg·m/s).

Example:

A car with a mass of 1000 kg is traveling at a velocity of 20 m/s. Its momentum is:

p = mv = (1000 kg)(20 m/s) = 20,000 kg·m/s