Chapter 12 Beginning

  Work is done when a force causes a change in the position or motion of an object. Work is like typing on your computer. Power- is the rate at which work is done. How much force you put on your keys when you type.  Machines help us by changing the distance over which a certain force is applied. Like tactors help us feed horses. I knew everything we went over, because we had already taken notes, and no i dont have any questions.