Final answer:
Impulse plays a crucial role in minimizing force during collisions in the design and use of airbags and collapsible bumpers in cars.
Step-by-step explanation:
In the design and use of airbags and collapsible bumpers in cars, impulse plays a crucial role in minimizing the force experienced by the occupants during a collision. Impulse is the product of net force and the duration of time of the impact.
When there is a sudden stop, the dashboard padding and airbags allow the net force on the occupants to act over a longer time, reducing the force exerted on them. This helps to prevent serious injuries.
Additionally, the use of plastics in cars allows for crumpling or collapsing in the event of a collision, increasing the collision time and reducing the force exerted on the car and its occupants.