You can think of work as a means of transferring energy from one system to another.
In physics, work is done when an object on which a force is acting moves in the direction of that force. For example, if you are lifting a carton and the carton moves up, you do the work on the carton. On the other hand, if you are simply holding the carton in your arms, no work is being done despite the effort it takes to hold it.
Learning the concepts of physics will enrich your understanding of everyday events.
Assign directly to your students using the code or link above, without having them log in. Simply tell your students to go to
www.pbsstudents.org and enter the Assignment Code, or click on the Assignment URL to share the assignment as a link.