Work, Energy And Power Flashcards
Define Power
The rate at which work is done.
State what is meant by work done?
It is the product of force and displacement covered in the direction of the force.
What is the unit of Work done?
Joules
What is energy?
Energy is the ability to do work.
What is the principle of conservation of energy?
The Principle of Conservation of Energy states that:
Energy cannot be created or destroyed, it can only change from one form to another
What is Efficiency?
The efficiency of a system is the ratio of the useful energy output from the system to the total energy input.
What is gravitational potential energy?
It is the energy stored in a mass due to its position in a gravitational field.
What is kinetic energy?
It is the energy an object has due to its motion (or velocity).
