In physics, the quantity Force • time is known as impulse. And since the quantity m•v is the momentum, the quantity m•Δv must be the change in momentum.
In physics, a force is any influence that causes an object to undergo a certain change, either concerning its movement, direction, or geometrical construction.

Impulse is the change in linear momentum of a body. It may be defined or calculated as the product of the average for multiplied by the time over which the force is exerted. Impulse is a vector quantity since it is the result of integrating force, a vector quantity, over time. The SI unit of impulse is the newton second or in base units, the kilogram meter per second (kg.m/s);
J= \int\limits {f} \, dt
In physics, a force is any influence that causes an object to undergo a certain change, either concerning its movement, direction, or geometrical construction. In other words, a force can cause an object with mass to change its velocity (which includes to begin moving from a state of rest), i.e., to accelerate, or a flexible object to deform, or both.
The original form of Newton's second law states that the net force acting upon an object is equal to the rate at which its momentum changes with time.
F = ma
where the arrows imply a vector quantity possessing both magnitude and direction