Solution Found!

Physics / University Physics 13 / Chapter 6 / Problem 83P

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

Change Question

Crash Barrier. A student proposes a design for an

Chapter 3, Problem 83P

(choose chapter or problem)

Get Unlimited Answers

QUESTION:

Crash Barrier?. A student proposes a design for an automobile crash barrier in which a 1700-kg sport utility vehicle moving at 20.0 m/s crashes into a spring of negligible mass that slows it to a stop. So that the passengers are not injured, the acceleration of the vehicle as it slows can be no greater than 5.00?g?. (a) Find the required spring constant ?k?, and find the distance the spring will compress in slowing the vehicle to a stop. In your calculation, disregard any deformation or crumpling of the vehicle and the friction between the vehicle and the ground. (b) What disadvantages are there to this design?

Questions & Answers

QUESTION:

Crash Barrier?. A student proposes a design for an automobile crash barrier in which a 1700-kg sport utility vehicle moving at 20.0 m/s crashes into a spring of negligible mass that slows it to a stop. So that the passengers are not injured, the acceleration of the vehicle as it slows can be no greater than 5.00?g?. (a) Find the required spring constant ?k?, and find the distance the spring will compress in slowing the vehicle to a stop. In your calculation, disregard any deformation or crumpling of the vehicle and the friction between the vehicle and the ground. (b) What disadvantages are there to this design?

ANSWER:

Solution 83P Step 1: Mass of vehicle m = 1700 kg. Speed of vehicle v = 20 m/s. Acceleration of the vehicle is a = 5.0 g.

Study Tools You Might Need

Chapter: 9 Problem: 97E

Chemistry: A Molecular Approach 3
The cyanate ion (OCN-) and the fulminate ion (CNO-) share the same three atoms but have vastly different properties. The cyanate ion is stable, while the fulminate ion is unstable and forms explosive compounds. The resonance structures of the cyanate ion were explored in Example 9.8 . Draw Lewis stru

Chapter: 11 Problem: 7

Campbell Biology 10
. Protein phosphorylation is commonly involved with all of the following except a. activation of receptor tyrosine kinases. b. activation of protein kinase molecules. c. activation of G protein-coupled receptors. d. regulation of transcription by signaling molecules.

Chapter: 1 Problem: 10

Campbell Biology in Focus - Standalone book 1
A typical prokaryotic cell has about 3,000 genes in its DNA, while a human cell has about 20,500 genes. About 1,000 of these genes are present in both types of cells. Based on your understanding of evolution, explain how such different organisms could have this same subset of genes. What sorts of fun

Chapter: 22 Problem: 5

Campbell Biology in Focus - Standalone book 1
Which of the following factors would not contribute to allopatric speciation? a. A population becomes geographically isolated from the parent population. b. The separated population is small, and genetic drift occurs. c. The isolated population is exposed to different selection pressures than the anc

Chapter: 18 Problem: 18-4

Glencoe Accounting: First Year Course, Student Edition 1
Analyzing a Source Document Answer these questions, based on the debit memorandum shown here. 1. Which company is returning the merchandise? 2. How many items are being returned? 3. What amount is entered in the journal entry? 4. Which account is debited? 5. Which account is credited?

Chapter: 41 Problem: 1

Campbell Biology in Focus 2
What are pathogens?

Chapter: 4 Problem: 1

Introduction to Business
After seeing a Quiznos franchise recruitment infomercial to recruit franchisees, you are tempted to apply to open your own Quiznos sub shop. However, your research on the company turns up some disturbing information. Many current franchisees are unhappy with the companys management and practices, amo

Chapter: 5 Problem: 4

Urban Economics 8
Labor Supply Elasticity: Island City versus Plains City Island City is located on a small island, while Plains City is located at the center of a large, fl at, featureless plain. Draw two labor-supply curves, one for each city. a. The supply curve for Island City is [steeper/fl atter] because. . . .

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

×

Register

Sign up for access to all content on our site!

Or login if you already have an account