Work and Energy
'Work done' is a measure of energy transfer. It is calculated by multiplying the force by the distance through which it acts.
Work is measured in joules, force is measured in newtons and distance is measured in metres.
Objects which are raised above the ground have gravitational potential energy (GPE). This is calculated using the equation GPE=mgh, where m=mass, g=10 and h=height.
When an object falls its GPE is converted into kinetic energy. We can calculate kinetic energy using the equation KE=1/2mv2.
