Energy, Work, and Simple Machines

Front

What is the sum of potential energy and kinetic energy in a system of objects?

Back

Mechanical energy.

Front

What is a machine that does work through the use of one movement?

Back

Simple machine.

Front

What is a flat, sloped surface used to help lift objects?

Back

Inclined plane.

Front

What is the ratio of output work to input work called?

Back

Efficiency.

Front

What form of kinetic energy does an electric current carry?

Back

Electric energy.

Front

What is the energy stored in an object due to its position?

Back

Potential energy.

Front

What is the energy of motion?

Back

Kinetic energy.

Front

What is a device that changes the direction or magnitude of a force?

Back

Simple machine.

Front

What is the work done per unit of time?

Back

Power.

Front

What is the principle that states energy cannot be created or destroyed?

Back

Law of conservation of energy.