1. The front 1.20 m of a 1400-kg car is designed as a "crumple zone" that collapses to absorb theshock of a collision. If a car traveling 25.0 m/s stops uniformly in 1.20 m (uniformly means thecar experiences a constant deceleration until it stops),(a) how long does the collision lasts?(b) what is the magnitude of the average force on the car?(c) what is the magnitude of the acceleration of the car?

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Answered: 1. The front 1.20 m of a 1400-kg car is…

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter8: Conservation Of Energy

Section: Chapter Questions

Problem 84PQ

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The front 1.20 m of a 1 400-kg car Ls designed as a crumple zone that collapses to absorb the shock of a collision. If a car traveling 25.0 m/s stops uniformly in 1.20 m, (a) how long does the collision last, (b) what is the magnitude of the average force on the car, and (c) what is the magnitude of the acceleration of the car? Express the acceleration as a multiple of the acceleration due to gravity.
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A 2.00 1O3-kg car moving cast at 10.0 m/s collides with a 3.00 103-kg car moving north. The cars stick together and move as a unit after the collision, at an angle of 40.0 north of east and a speed of 5.22 m/s. Find the speed and direction of the 3.00 103-kg car before the collision.
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