work_9

=**Understanding Work**=

You may think of work as a job or something that requires physical labor or effort, and it is. Scientifically speaking, however, the word, "work" has another meaning.
 * What is "work?"**


 * Work** is done when a force causes an object to move in the same direction as that force.

In order for scientific **work** to happen: 1. a force must be applied to the object 2. the object must move in the direction of the force.

media type="file" key="do work.avi" width="370" height="257" Woody is doing work in the video above. Amazing!

In the video, Woody **is** **doing work** because he's moving the ball in an upward direction and he's putting a force on it to make it move.

In the picture, Woody is holding the ball in place. Since the ball is not moving, scientifically speaking, **he's not doing any work**.

Mathematically:
 * Work = Force x Distance**

The units for work are Newtons x meters or Joules.