Understanding Impulse

Impulse is the change in momentum of an object. It's calculated as:

* Impulse (J) = Force (F) x Time (Δt)

Applying the Information

* Force (F): 400 N

* Time (Δt): 1 second

Calculation

* Impulse (J) = 400 N * 1 s = 400 Ns

Answer

The magnitude of the impulse is 400 Ns.