5 - Work, Energy, Power Flashcards
1
Q
Conservation of Energy
A
In a closed system with no external forces, the total energy before an event equals the total energy after the event. Energy does not have to remain in the same form.
2
Q
Efficiency
A
The useful output of a system divided by the total input.
3
Q
Gravitational Potential Energy
A
The energy gained by an object when it is raised by a height in a gravitational field.
4
Q
Kinetic Energy
A
The energy an object has due to its motion. It is the energy that would be transferred from the object when it decelerates to rest.
5
Q
Power
A
The work done or energy transferred divided by the time taken.
6
Q
Work Done
A
The energy transferred when a force moves an object over a distance.
