Simple machines allow us to accomplish things because they change the direction and the amount of force needed to perform a task.
(they; change; the direction and the amount of force) (the amount of force; needed; to perform a task) (Simple machines; allow; us to accomplish things because they change the direction and the amount of force) Context(Simple machines allow,List([0, 21))):(us; to accomplish; things; because they change the direction and the amount of force)
Simple machines allow,List([0, 21))
they the amount of force Simple machines us
change needed allow to accomplish
the direction and the amount of force
to perform a task
us to accomplish things because they change the direction and the amount of force
things because they change the direction and the amount of force