Impulse
衝量

Impulse is defined as the product of the force and the time during which the force acts (time of impact).

It is also equal to the change of momentum.

Impulse = Ft = mv - mu

Its SI unit is newton second (N s) (or kg m s^-1).

Related topics:
8.1       Momentum and changing momentum

Pronunciation in English (listen with default application).