# Work, Power & Mechanical Advantage

## 16 terms

### Watt

The amount of power required to do 1 joule of work in 1 second.

### Work

The transfer of energy to an object by a force that causes the object to move in the direction of the force

### Power

The quantity that measures the rate at which work is done

### Joule

Nm is a derived unit that is equivalent to this

### Joule/second (J/s)

A Watt is equivalent to this derived unit

Formula for Work

### James Watt

The unit for power was named after a Scottish inventor who played an important role in the development of the steam engine

### Input force

The type of force put into a machine to make it work; usually spread out over a large distance

A ratio of the output force and the input force

### Output force

The type of force a machine applies to accomplish a task

### James Prescott Joule

The unit of work was named after this English physicist

### - Joule - Newton meter - kilogram times meter squared per second squared

The units of work include...

### Machine

A device that can multiply and change the direction of an input force.

Units for power

### Work; joules

What is done when a force makes an object move? The units are _____.