Understanding Impulse

Impulse is the change in momentum of an object. It's represented by the following equation:

* Impulse (J) = Force (F) * Time (Δt)

Applying the Information

* Force (F) = 30 N

* Time (Δt) = 4 s

Calculation

* Impulse (J) = (30 N) * (4 s) = 120 Ns

Answer

The impulse of the object is 120 Ns (Newton-seconds).