Understanding Impulse

Impulse is the change in momentum of an object. It's calculated using the following formula:

* Impulse (J) = Force (F) × Time (Δt)

Applying the Formula

1. Identify the known values:

* Force (F) = 400 N

* Time (Δt) = 1 second

2. Plug the values into the formula:

* Impulse (J) = 400 N × 1 second

3. Calculate the impulse:

* Impulse (J) = 400 Ns (Newton-seconds)

Therefore, the magnitude of the impulse is 400 Ns.

Important Note: The mass of the car (2500 kg) is not directly used to calculate the impulse in this scenario. The impulse is determined solely by the force and the duration of the collision.