Physics A - Lesson 6: Work, Energy, and Power Flashcard

Front

What is the formula for gravitational potential energy?

Back

PE = mgh

Front

What does the work-energy theorem state?

Back

Work done equals the change in kinetic energy

Front

What happens to total energy in a closed system?

Back

It remains constant

Front

What is mechanical energy?

Back

The sum of kinetic and potential energy

Front

What does efficiency measure?

Back

Useful work output divided by total energy input

Front

What is the formula for power?

Back

P = W/t

Front

What is the SI unit of power?

Back

Watt (W)

Front

1 horsepower is equivalent to how many watts?

Back

746 W

Front

What type of energy is stored between atoms in compounds?

Back

Chemical energy

Front

Elastic potential energy

Back

Energy stored by stretching or compressing elastic materials