is enough energy to push with a force of 1 newton for a distance of 1 meter.
-There are many types of energy.
-Some types of energy include Mechanical energy, Chemical energy, Nuclear energy, Radiant energy, Potential energy and Kinetic energy.
-Energy cannot be destroyed or created, only transformed.
-Law of Conservation of Energy-

Energy can never be created or

destroyed, only transformed into

another form. The total amount of

energy in the universe is constant.

from force applied over distance. A

force of 1 newton does 1 joule of work when the force causes 1 meter of motion in the direction of the force.

-Energy is required to do work.
-Work done against gravity is equal to weight x change in height.
-Work Input- the work that is done

on an object.

-Work Output- the work that an

object does as a result of work input.
-The energy output of a process or machine can never exceed the energy input.
-Power- the rate of doing work or

moving energy. Power is equal to

energy (or work) divided by time.

-Watt (W)- a unit of power equal to

1 joule per second.

Horsepower (hp)- a unit of power

equal to 746 watts.

parts that work together to

accomplish a task.

-Input- forces, energy, or power

supplied to make a machine

accomplish a task.

-Output- forces, energy, or power

provided by the machine.
-Simple Machine- an unpowered

mechanical device that accomplishes a task with only one movement.

-Lever- a stiff structure that rotates

around a fixed point called a fulcrum.

-Gear- a rotating wheel with teeth that transfers motion and forces to other gears or objects.
-Machines do work.
-Machines have efficiency and power.
-Mechanical Advantage- the

ratio of output force divided by input force.
-Gear Ratio- the ratio of output turns to input turns for a pair of gears.