Energy, Work and Power Flashcards
1
Q
Energy
A
The capacity to do work.
2
Q
Kinetic Energy, KE
A
Energy a body possesses due to its motion. KE= 1/2 mv^2
3
Q
Gravitational Potential Energy, GPE
A
Energy which a body possesses because of its position relative to the ground GPE = mgh
4
Q
Elastic Potential Energy
A
Energy stored in a body due to its elastic deformation.
5
Q
Principle of Conservation of Energy
A
- Energy cannot be created or destroyed.
- Energy can only be converted from one form to another or transferred from one body to another.
- The total amount of energy in an isolated system remains the same.
6
Q
One Watt, 1W
A
Rate of work done/energy conversion of one joule per second.
7
Q
Efficiency
A
Ratio of useful energy output to total energy input.
8
Q
Work done, W
A
Product of the force of an object and the distance moved in the direction of the force. W =Fd
9
Q
One Joule
A
Work done by the force of one newton, which moves an object through a distance of one metre in the direction of the force.
10
Q
Power,P
A
Rate of Work Done
