Impulse and Momentum

 Momentum is the vector product of mass and velocity and has units of kilogram meters per second. Any moving object has momentum.

Impulse is when a force is applied to an object for a period of time.  Impulse is a vector quantity that is the product of force times elapsed time and is in units of Newton-seconds.  Impulse changes momentum.  The amount of impulse on an object equals its change in momentum, as Newton seconds is equivalent to kilogram meters per second.

For more information on this topic view the video clip Momentum and Impulse from Discovery Education™ streaming.