U1.8 Work Done, Potential Energy And Kinetic Energy Flashcards
What is the definition of energy
The stored ability to do work
What is the definition of work done
A constant force as the product of the force and the distance moved in the direction of the force
What is the definition of the joule
1 joule is the work done when a force of 1 Newton moves the distance of 1 metre
When does an object have gravitational potential energy
When it is raised above the ground
When does an object have kinetic energy
When it is moving
What is the principal of conservation of energy
Energy can not be created or destroyed but can be changed from one form to another
What does loss in gravitational potential energy equal
A gain in kinetic energy
What is the definition of power
The rate of doing work
How should efficiency be defined
In terms of its equation
