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Get Full Access to College Physics - 7 Edition - Chapter 4 - Problem 4.31
Get Full Access to College Physics - 7 Edition - Chapter 4 - Problem 4.31

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A train has a mass of 5.22 106 kg and is moving at 90.0

ISBN: 9780495113690 154

Solution for problem 4.31 Chapter 4

College Physics | 7th Edition

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College Physics | 7th Edition

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Problem 4.31

A train has a mass of 5.22 106 kg and is moving at 90.0 km/h. The engineer applies the brakes, resulting in a net backward force of 1.87 106 N on the train. The brakes are held on for 30.0 s. (a) What is the nal speed of the train? (b) How far does the train travel during this period?

Step-by-Step Solution:
Step 1 of 3

• KeyPoints o UnitofforceandmagnitudeismeasuredinNewtons o Direction=+or- o ObjectofInterest:theobjectbeinganalyzed o Makesuretoaskyourself,“Isitfalling” o NetForce:thesumofforces o Equilibrium:netforce=0 o System:objectofinterestandobjectexertingforcesonit o Contactforce:theforcewheretwoobjectsmeet o Forcediagrams:representforcesexertedonobjectofinterest • ForceDiagrams 1. Useadotforobjectofinterest. F(HAND) 2. Labelobjectofinterest.(PoolBall) 3. Listforcesthatotherobjectsexert

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ISBN: 9780495113690

The full step-by-step solution to problem: 4.31 from chapter: 4 was answered by , our top Physics solution expert on 11/15/17, 04:28PM. Since the solution to 4.31 from 4 chapter was answered, more than 260 students have viewed the full step-by-step answer. The answer to “A train has a mass of 5.22 106 kg and is moving at 90.0 km/h. The engineer applies the brakes, resulting in a net backward force of 1.87 106 N on the train. The brakes are held on for 30.0 s. (a) What is the nal speed of the train? (b) How far does the train travel during this period?” is broken down into a number of easy to follow steps, and 60 words. This textbook survival guide was created for the textbook: College Physics, edition: 7. College Physics was written by and is associated to the ISBN: 9780495113690. This full solution covers the following key subjects: train, brakes, mass, during, Engineer. This expansive textbook survival guide covers 30 chapters, and 2135 solutions.

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