Answer:
1.A simple machine is a mechanical device that changes the direction or magnitude of a force. In general, they can be defined as the simplest mechanisms that use mechanical advantage (also called leverage) to multiply force.
2.Simple machines are useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities.
3.Simple machines that are widely used include the wheel and axle, pulley, inclined plane, screw, wedge and lever.
4.Scissor,slide,axe,bicycle, corkscrew,see saw,crowbar,claw hammer,pliers
5. yung picture
