Skip to ContentGo to accessibility pageKeyboard shortcuts menu
OpenStax Logo
Physics

Critical Thinking Items

PhysicsCritical Thinking Items

Critical Thinking Items

9.1 Work, Power, and the Work–Energy Theorem

9.

Which activity requires a person to exert force on an object that causes the object to move but does not change the kinetic or potential energy of the object?

  1. Moving an object to a greater height with acceleration
  2. Moving an object to a greater height without acceleration
  3. Carrying an object with acceleration at the same height
  4. Carrying an object without acceleration at the same height
10.

Which statement explains how it is possible to carry books to school without changing the kinetic or potential energy of the books or doing any work?

  1. By moving the book without acceleration and keeping the height of the book constant
  2. By moving the book with acceleration and keeping the height of the book constant
  3. By moving the book without acceleration and changing the height of the book
  4. By moving the book with acceleration and changing the height of the book

9.2 Mechanical Energy and Conservation of Energy

11.

True or false—A cyclist coasts down one hill and up another hill until she comes to a stop. The point at which the bicycle stops is lower than the point at which it started coasting because part of the original potential energy has been converted to a quantity of heat and this makes the tires of the bicycle warm.

  1. True
  2. False

9.3 Simple Machines

12 .
We think of levers being used to decrease effort force. Which of the following describes a lever that requires a large effort force which causes a smaller force to act over a large distance and explains how it works?
  1. Anything that is swung by a handle, such as a hammer or racket. Force is applied near the fulcrum over a short distance, which makes the other end move rapidly over a long distance.
  2. Anything that is swung by a handle, such as a hammer or racket. Force is applied far from the fulcrum over a large distance, which makes the other end move rapidly over a long distance.
  3. A lever used to lift a heavy stone. Force is applied near the fulcrum over a short distance, which makes the other end lift a heavy object easily.
  4. A lever used to lift a heavy stone. Force is applied far from the fulcrum over a large distance, which makes the other end lift a heavy object easily
13 .
A baseball bat is a lever. Which of the following explains how a baseball bat differs from a lever like a pry bar?
  1. In a baseball bat, effort force is smaller and is applied over a large distance, while the resistance force is smaller and is applied over a long distance.
  2. In a baseball bat, effort force is smaller and is applied over a large distance, while the resistance force is smaller and is applied over a short distance.
  3. In a baseball bat, effort force is larger and is applied over a short distance, while the resistance force is smaller and is applied over a long distance.
  4. In a baseball bat, effort force is larger and is applied over a short distance, while the resistance force is smaller and is applied over a short distance.
PreviousNext
Order a print copy
Citation/Attribution

This book may not be used in the training of large language models or otherwise be ingested into large language models or generative AI offerings without OpenStax's permission.

Want to cite, share, or modify this book? This book uses the Creative Commons Attribution License and you must attribute Texas Education Agency (TEA). The original material is available at: https://www.texasgateway.org/book/tea-physics . Changes were made to the original material, including updates to art, structure, and other content updates.

Attribution information
  • If you are redistributing all or part of this book in a print format, then you must include on every physical page the following attribution:
    Access for free at https://openstax.org/books/physics/pages/1-introduction
  • If you are redistributing all or part of this book in a digital format, then you must include on every digital page view the following attribution:
    Access for free at https://openstax.org/books/physics/pages/1-introduction
Citation information

© Jun 7, 2024 Texas Education Agency (TEA). The OpenStax name, OpenStax logo, OpenStax book covers, OpenStax CNX name, and OpenStax CNX logo are not subject to the Creative Commons license and may not be reproduced without the prior and express written consent of Rice University.