Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Physics
Classical Physics
Mechanics
Understanding Work and Kinetic Energy: Examples and Calculations Explained
Reply to thread
Message
[QUOTE="fresh_42, post: 5689545, member: 572553"] If James is sitting on a rolling chair without any friction and air resistance, moving at a constant velocity of 2.2 m/s, then there is indeed no work done and the energy [U]difference[/U] equals zero. His kinetic energy is positive (242J I assume), but he started already moving and ends moving in your example at a constant speed, so there is no energy gained and no energy lost, because no work is done. If you let him start at zero speed, you have to calculated the acceleration (a > 0) and the energy balance is a different one. [/QUOTE]
Insert quotes…
Post reply
Forums
Physics
Classical Physics
Mechanics
Understanding Work and Kinetic Energy: Examples and Calculations Explained
Back
Top