1. Work & Power

2. Work
Work is defined as

3. Power
Power is defined as

4. Mechanical Advantage
Mechanical Advantage is defined as

5. Efficiency
Efficiency is defined as

6. How do machines make work easier?
Machines make work easier by

7. How do machines lose efficiency?
Machines lose efficiency because of the friction that comes from the parts rubbing on each other.
When this happens it causes the thermal energy to be lost and makes the machines break down and lose efficiency

8. How does this effect us everyday?
What does this mean for us?