Other safety features, such as airbags, are less visible or obvious, but are also effective at making auto crashes less deadly. Many of these safety features make use of the concept of impulse from physics. Recall that impulse is the net force multiplied by the duration of time of the impact. This was expressed mathematically as Ap = FnetAt. Identify 2 other changes automobiles have had implemented and use arrow analysis to show how they decrease impulse to make automobiles safer. Besides seatbelts