P.S. Ch14 Vocab work/machines

Front

Work

Back

force x distance

Front

Work is measured in

Back

Joules (J)

Front

Work happens when...

Back

a force is used to move an object through a distance

Front

Power

Back

the rate at which work is done --> work/time

Front

Power is measured in

Back

Watts (W)

Front

A machine is...

Back

A device that makes work easier

Front

A machine...

Back

Changes the size or direction of a force to make work easier.

Front

Mechanical Advantage (MA)

Back

the number of times that the machine increases an input force

Front

lever

Back

A rigid bar that is free to move around a fixed point (fulcrum)

Front

fulcrum

Back

The fixed point around which a lever pivots