Work, energy and power

Define work done

Energy transferred by a force

What is the equation for work done

Force x distance

Define energy

The ability to do work

State the principle of conservation of energy

Energy cannot be created or destroyed

Describe kinetic energy

The movement of mass

Equation for kinetic energy

0.5 x m x V²

Describe gravitational potential energy

Energy when in a gravitational field

Equation for GPE

m x g x Δh

Describe elastic potential

Energy from a change in shape (spring)

Equation for elastic potential

0.5 x k x e²

Define electromagnetic energy

Energy stored in electric + magnetic field (sun, x-rays)

Define chemical energy

Chemical bonds (batteries)

Define electrostatic energy

Charge particles in electric fields (capacitors)

Define magnetic energy

Charged particles + magnetic materials in magnetic fields

Define power

Power is rate of energy transferred

What is the equation for power

Energy transferred / time

What is the efficiency equation

Useful / total (x100)