1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

This should be an easy one: Work required to change speed

  1. Oct 11, 2004 #1
    Hi, I apologize for the simplicity here, I'm just getting started. Here's the question:

    An object has kinetic energy, K. How much work do you have to do to double the speed of the object?

    Any suggestion on how to start this would be much appreciated. :smile:
  2. jcsd
  3. Oct 11, 2004 #2
    The work-kinetic energy theorem states that the work done on a particle equals the change in kinetic energy of the particle. From that statement, you should have enough information to answer your question.
  4. Oct 12, 2004 #3


    User Avatar
    Staff Emeritus
    Science Advisor

    In order to use TALewis' hint, you will need to know how kinetic energy depends on speed.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: This should be an easy one: Work required to change speed
  1. Speed of work? (Replies: 4)