What is the car\'s initial momentum? What is the person\'s initial momentum? Wha

Question

What is the car's initial momentum? What is the person's initial momentum? What is the change in the momentum of the car? What is the change in the person's momentum? (You can estimate the mass of a person.) What is the net impulse that acts on the car to bring it to a stop? What is the net impulse that acts on the person to bring them to a stop? Do these numbers depend on the details of the crash? Why or why not? What object delivers the impulse that brings the car to a stop? What object delivers the impulse that brings the person to a stop? Think about what happens during such a crash, and discuss the role each of the factors below plays in the ultimate fate of the driver. Be sure to include what objects exert forces on what other objects, and use the model of impulse & momentum to estimate the strength of these forces. "crumple zone" of the front of the car use or non-use of seat belt deployment or non-deployment of airbag

Explanation / Answer

a) Initial momentum of car = 1500 * 30

                                = 45000 kg.m/s

    Initial momentum of person = 70 * 30

                                = 2100 kg.m/s

   change in momentum of car = - 45000 kg.m/s

change in momentum of person = - 2100 kg.m/s

b) Net impulse on car =   - 45000 N.s

    Net impulse on person =   - 2100 N.s

   No, it dont depend on details of crash .

c) Solid wall and front of car provide impulse .

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