College Physics
OER 2016 Edition
ISBN: 9781947172173
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 8, Problem 1CQ
An object that has a small mass and an object that has a large mass have the same momentum. Which object has the largest kinetic energy?
Expert Solution & Answer
To determine
Which object has the largest kinetic energy?
Answer to Problem 1CQ
Largest kinetic energy will be of the smaller object.
Explanation of Solution
Given info:
An object that has a small mass and an object that has a large mass have the same momentum.
As we know the momentum is the same therefore the speed for the smaller mass object will be more. Since the kinetic energy of an object is momentum times of speed. Therefore, for the same momentum, the mass of higher speed will have more energy i.e. the smaller mass.
Therefore, the largest kinetic energy will be of the smaller object.
Conclusion
Largest kinetic energy will be of the smaller object.
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Chapter 8 Solutions
College Physics
Ch. 8 - An object that has a small mass and an object that...Ch. 8 - An object that has a small mass and an object that...Ch. 8 - Professional Application Football coaches advise...Ch. 8 - How can a small force impart the same momentum to...Ch. 8 - Professional Application Explain in terms of...Ch. 8 - While jumping on a trampoline, sometimes you land...Ch. 8 - Professional Application Tennis racquets have...Ch. 8 - Professional Application If you dive into water,...Ch. 8 - Under what circumstances is momentum conserved?Ch. 8 - Can momentum be conserved for a system if there...
Ch. 8 - Momentum for a system can be conserved in one...Ch. 8 - Professional Application Explain in terms of...Ch. 8 - Can objects in a system have momentum while the...Ch. 8 - Must the total energy of a system be conserved...Ch. 8 - What is an elastic collision?Ch. 8 - What is an inelastic collision? 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