P4. Forces & Energy Flashcards
1
Q
Energy
A
The ability to do work
2
Q
Principle of Conservation of Energy
A
Energy cannot be created or destroyed; it can only change from one form to another
3
Q
Power
A
The rate of doing work
4
Q
Efficiency
A
- useful power output/power input * 100%
2. useful energy output/energy input * 100%
