11 - Work, Energy and Power

When a force F moves a body through a displacement s in the
direction of the force, the work W done is equal to the force multiplied
by the displacement.

1 joule is the work done when a force of 1 N displaces an object by 1 m

The ability to do work.

states that energy
cannot be created or
destroyed but can only be
converted from one form to
another.

the energy that a body has due to
its motion.

the energy a body has
due to its position in a force field.

A source of energy that does not get used up

A source of energy that will eventually run out

Power is the rate at which
work is done.

or

Power is the rate at which
energy is converted.

1 Watt = 1 Joule per Second