Work Done, Potential and Kinetic Energy Flashcards
Energy
The stored ability to do work
Work done
Work done by a constant force is the product of the force and the distance moved in the direction of the force.
Work equation
W = Fs
Potential Energy
An object has gravitational potential energy when it is raised above the ground.
Potential energy equation
Kinetic Energy
Energy of a body due to movement
Kinetic energy equation
Efficiency
e
Change in kinetic energy
Equal to the work don on the object
Principle of Conservation of Energy
Energy cannot be created or destroyed but can be changed from one form to another
Mechanical energy
Potential energy + kinetic energy
If no external forces other than gravity do work on a body, its mechanical energy remains constant
Power
The rate of doing work
Efficiency
Way of describing how good a device is at transferring energy from one form to another in an intended way.
