science brady words 120313

phyiscal or mental effort or activity directed toward the production or accomlishment of something

the SI unit of work or energy

the rate at which work is done or energy is transfored

the unit used to express power; equivanlent to joules per second

a device that heples do work by either overcoming a force or changing the direction of the applied force

the work done on a machine

the work done by a machine

is the number of times the machine multpies force

is a comparison of a machine's work output with the work input

is a simple machine that has a bar that proviots at a fixed point, called a fulcrum

is a pair of inclined planes that move

is a simple machine that has a ground wheel that holds a rope or a cable

is an inclined plane that is wrapped in a spiral around a cylinder

a simple machine consiting of of two circular objects of different sizes

is the simple machine that is a straight, slanted surface

machines that are made of two or more simple machines