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# Work, Power & Understanding Machines

### Across

- the number of times a machine increases a force exerted on it
- a push or pull exerted on an object
- a device that changes the amount of force exerted, the distance over which a force is exerted, or the direction in which force is exerted

### Down

- the unit of power when one joule of work is done in one second
- the rate at which one form of energy is transformed into another
- the force exerted on an object by a machine
- a unit of measure that equals the force required to accelerate 1 kilogram of mass at 1 meter per second
- the amount of work you do when you exert a force of 1 newton to move an object a distance of 1 meter
- the force exerted on a machine
- the attractive force between objects; the force that moves objects downhill
- The percentage of the input work that is converted to output work

# Key

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### Across

- mechanicaladvantage
- force
- machine

### Down

- watt
- power
- outputforce
- newton
- joule
- inputforce
- gravity
- efficiency