1. Work and Simple Machines

2. Work
The amount of energy transferred by a force over a certain distance
Measured in joules
If an object doesn’t move a distance, no work was done
W=FxD

3. Work= Force multiplied by distance
How much work is done by a person who pushes a lawnmower with a force of 50N at a distance of 450m?
55,000 J of work is done to move a rock 25m. How much force was applied?

4. Simple Machines
-make work easier by changing the size or direction of a force
-you do work on the machine, the machine does work on something else
-Mechanical advantage is the number of times the machine multiplies your force.