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# Freight trains can produce only relatively small ISBN: 9780130606204 3

## Solution for problem 29PE Chapter 2

Physics: Principles with Applications | 6th Edition

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Problem 29PE

Freight trains can produce only relatively small accelerations and decelerations. (a) What is the final velocity of a freight train that accelerates at a rate of 0.0500 m/s2 for 8.00 min, starting with an initial velocity of 4.00 m/s? (b) If the train can slow down at a rate of 0.550 m/s2 , how long will it take to come to a stop from this velocity? (c) How far will it travel in each case?

Step-by-Step Solution:

Step-by-step solution 29PE Step 1 of 8 Use he kinematics equation, Therefore, Here is the final speed, is the initial speed, is the acceleration and is the time. Step 2 of 8 (a) The formula to find the final speed of the train is, Substitute for , for and for . Therefore, the final speed is . Step 3 of 8 (b) Step 4 of 8 The formula to find the time interval is,

Step 5 of 8

Step 6 of 8

##### ISBN: 9780130606204

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