Cars are equipped with air bags to prevent occupants from colliding with a dashboard or windshield. A 50-kg person moving at 20 m/s will be considerably safer if their momentum is stopped by an air bag instead of by a dashboard or windshield. Why does an air bag contribute to the safety of the person? O It causes the momentum change and impulse experienced by the person to be less. O It causes the momentum change and the collision force to be less. O It causes the collision time to be greater and the collision force to be less.

Cars are equipped with air bags to prevent occupants from colliding with a dashboard or windshield. A 50-kg person moving at 20 m/s will be considerably safer if their momentum is stopped by an air bag instead of by a dashboard or windshield. Why does an air bag contribute to the safety of the person? O It causes the momentum change and impulse experienced by the person to be less. O It causes the momentum change and the collision force to be less. O It causes the collision time to be greater and the collision force to be less.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter11: Collisions

Section: Chapter Questions

Problem 9PQ

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