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If it takes total work W to give an object a speed v and

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 4DQ Chapter 6

University Physics | 13th Edition

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

University Physics | 13th Edition

4 5 1 385 Reviews
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5
Problem 4DQ

If it takes total work W to give an object a speed v and kinetic energy K , starting from rest, what will be the object’s speed (in terms of v) and kinetic energy (in terms of K) if we do twice as much work on it, again starting from rest?

Step-by-Step Solution:

Solution 4DQ Step 1 of 4: In the given problem we need to calculate the velocity and kinetic energy when work is doubled. From work energy theorem, the work done is equal to change in kinetic energy. That is, W = KE W = KE fKE i Using KE= mv 1 2 W= mv1 2 - mv 2 2 2 f 2 i Initially the object is at rest, so the initial velocity will be i= 0, v W= mv1 2 2 f 1 2 Also KE=W= mv 2 f …………….1 Step 2 of 4: When total work is W to give an object a speed v and kinetic energy K , starting from rest. 1 2 That is, KE =1 = mv 1 2 1 ………….2 Solving for velocity, 2 2KE 1 v 1 = m 2KE 1 v 1 = m …………..3

Step 3 of 4

Chapter 6, Problem 4DQ is Solved
Step 4 of 4

Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

This full solution covers the following key subjects: Energy, work, kinetic, terms, Object. This expansive textbook survival guide covers 26 chapters, and 2929 solutions. This textbook survival guide was created for the textbook: University Physics, edition: 13. Since the solution to 4DQ from 6 chapter was answered, more than 502 students have viewed the full step-by-step answer. The full step-by-step solution to problem: 4DQ from chapter: 6 was answered by , our top Physics solution expert on 05/06/17, 06:07PM. The answer to “If it takes total work W to give an object a speed v and kinetic energy K , starting from rest, what will be the object’s speed (in terms of v) and kinetic energy (in terms of K) if we do twice as much work on it, again starting from rest?” is broken down into a number of easy to follow steps, and 51 words. University Physics was written by and is associated to the ISBN: 9780321675460.

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