Momentum

In Physics, Momentum is equal to the mass (in kilograms) time the velocity (in meters/second).

An Impulse can cause a change in Momentum.

In any collision, momentum is always conserved, meaning that the total Momentum before a collision is equal to the total Momentum just after the collision.

A small fast moving object can have the same Momentum as a heavy slow moving object.

Since Momentum is based upon the vector quantity called velocity, momentum is also a vector.