Vocabulary Flashcards Chapter 4
A unit measure energy and work.One calorie is equal to 4.18 joule of energy;one joule of work is done when a force of one newton moves an object
one meter.
Joule
Stored energy;the energy an object has due to its position,molecular arrangement,or chemical composition.
Potential energy
The energy of motion.A moving object has the most
kinetic energy at the point where it moves the fastest.
Kinetic energy
A combination of the kinetic energy and potential energy an object has.
Mechanical energy
As long as you account for all the different forms
of energy involved in any process,you will find that
The total amount of energy never changes.
Conservation of energy
The rate at which work is done.
Power
The unit of measurement for,power which is equal to one joule of work done or energy transferred
in one second.For example,a 75 W light bulb converts electrical energy into heat and light
at a rate of 75 joules per second.
Watt
The unit of measurement of power for engines
and motors.One horsepower equals 745 watts.
Horsepower
The use of force to move an object over a distance.
Work
