Momentum is also
a vector quantity which means it has a magnitude and direction.
Accident reconstructionists sometimes use momentum to determine
how fast vehicles were going and how severe the collision
was. Most collisions are at an angle and the pre-impact
speeds can be determined using momentum and trigonometry.
Since this isn't
a lesson on how to determine vehicle speeds, just be aware
that the faster a vehicle travels the momentum is
increased and by the same proportionate amount.