The law of conservation of momentum says that the momentum of a closed system is constant in time (conserved) Newton’s second law in terms of momentum states that the net force applied to a system equals the rate of change of the momentum that the force causes

When a force is applied on an object for some amount of time, the object experiences an impulse This impulse is equal to the object’s change of momentum

momentum — measure of the quantity of motion that an object has; it takes into account both how fast the object is moving, and its mass; specifically, it is the product of mass and…. impulse — effect of applying a force on a system for a time interval; this time interval is usually small, but does not have to be. system — object or collection of objects whose motion is currently under investigation; however, your system is defined at the start of the problem, you must keep that definition for the…. closed system — system for which the mass is constant and the net external force on the system is zero.