Jump to content
  • 0
AngeFlight

Physics 1 2nd edition Q 5.39 CARTS

Question

Everyone in my household has tried working this problem and cannot come up with the given answer.

A force F acts on a cart in motion on a frictionless surface to change its velocity.  The initial velocity of the cart and final velocity of each cart are shown.  You do not know how far or in which direction the cart traveled.  Rank the energy required to change each cart's velocity from greatest to least.

Cart A changes from 5 m/s to 2 m/s and has a mass of 2 kg.

Cart B changes from 3 m/s to -3 m/s and has a mass of 3 kg.

Cart C changes from 5 m/s to 6 m/s and has a mass of 5 kg.

Cart D changes from -1 to 2 m/s and has a mass of 4 kg.

Does this problem use W = 1/2 mv^2 formula?  Does mass matter since it's frictionless and is moving in the x direction?

Share this post


Link to post
Share on other sites

1 answer to this question

Recommended Posts

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Answer this question...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


Terms of Use

The pages of APlusPhysics.com, Physics in Action podcasts, and other online media at this site are made available as a service to physics students, instructors, and others. Their use is encouraged and is free of charge. Teachers who wish to use materials either in a classroom demonstration format or as part of an interactive activity/lesson are granted permission (and encouraged) to do so. Linking to information on this site is allowed and encouraged, but content from APlusPhysics may not be made available elsewhere on the Internet without the author's written permission.

Copyright Notice

APlusPhysics.com, Silly Beagle Productions and Physics In Action materials are copyright protected and the author restricts their use to online usage through a live internet connection. Any downloading of files to other storage devices (hard drives, web servers, school servers, CDs, etc.) with the exception of Physics In Action podcast episodes is prohibited. The use of images, text and animations in other projects (including non-profit endeavors) is also prohibited. Requests for permission to use such material on other projects may be submitted in writing to info@aplusphysics.com. Licensing of the content of APlusPhysics.com for other uses may be considered in the future.

×
×
  • Create New...