Impulse (Imp or J)
When an object is acted upon by a force for an interval of time, the change of momentum of that object is Impulse. Simply, Impulse is the product of force and time for which it acts. Impulse is also a vector quantity in the same direction as force. Impulse helps you calculate the change in momentum, or you can use impulse to calculate the average impact force of a collision.
Formula for Impulse = force × time
J = f × t
Unit of Impulse is Newton second
Symbol of Impulse is Ns