Momentum is a measure of an object's mass and velocity. It is calculated as:

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

Therefore, any object that has mass and is in motion will have momentum.

Examples:

* A car moving down the road

* A ball thrown in the air

* A flowing river

* A planet orbiting the sun

Note:

* Objects at rest have zero momentum because their velocity is zero.

* The momentum of an object is a vector quantity, meaning it has both magnitude and direction.

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