3.3 Work, Energy And Power Flashcards
(7 cards)
What is efficency?
The useful output (power or energy, etc) of a system divided by the total output
What is the conservatipon of energy?
In a closed ssen with no external forces the total energ of the system before an event is equal to the total energy of the system after the event.
What is gravitational potential energy?
The energy gained by an object when its raised by a height in a gravitational field
What is kinetic energy?
The energy an object has due to its motion. Its the amount of energy that would be transfered from the object when it decelerates to rest
What is power?
The work done or energy transfered by a system divided by the time taken for that to be done
What is work done?
The energy transfered when a force moves an object over a distance
What is the equation for work done?
W=fx
W=(Fv^2) / (2a)
