Energy is measured in __________ (__________). It gives us the ability to do work. In physics work is done when energy is transferred. When an object is moved a distance against a force, work has been done to overcome that force.
If the force is greater, then the work done will be __________.
If the distance is further, then the work done will be __________.
Work Done = Energy transferred = Applied Force x distance moved in the direction of the force
This can be summarised in the following 'magic triangle':
Work done against frictional forces is mainly transformed into __________.
Power is the rate of energy transfer (or work done):
Power is measured in __________ (__________), equivalent to 1 Joule per second.