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…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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The front 1.20 m of a 1,200-kg car is designed as a "crumple zone" that collapses to absorb the shock of a collision. (a) If a car traveling 26.0 m/s stops uniformly in 1.20 m, how long does the collision last? (b) What is the magnitude of the average force on the car? (c) What is the magnitude of the acceleration of the car? Express the acceleration as a multiple of the acceleration of gravity.
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Because of your knowledge of physics, you have been assigned to investigate a train wreck between a fast moving passenger train and a slower moving freight train both going in the same direction. You have statements from the engineer of each train and the stationmaster, as well as some measurements you make. To check the consistency of the description of events leading up to the collision, you decide to calculate the distance from the station that the collision should have occurred if everyone’s statements were accurate. You will then compare that result to the actual position of the wreck that is 0.5 miles from the station. In this calculation you decide that you can ignore all reactiontimes. Here is what you know: • The stationmaster claims that she noted that the freight train was behind schedule. As regulations require, she switched on a warning light just as the last car of the freight train passed her. • The freight train engineer says he was going at a constant speed of 10 miles…
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