momentum is a product of the mass and the velocity of the object. the momentum changes very time when the mass or the velocity of the object changed.
example : a cycle of mass 60 kg's including the person sitting on it moves with the velocity 15 meters per second. find out the momentum of the object ?
solution : mass = 60 kg
velocity = 15
to find out momentum of the body we should use the formula p = mv
in the formula p means momentum of the body, m is the mass and v is the velocity.
p = mv
p = 60*15
p = 900 meters per second.