A simple machine that is two inclined planes back to back that helps cut or split other objects.

A machine that is made up of two parts: a disk that turns around an axis and transfers force to and from an axle.

A stiff bar that moves about a fixed point (fulcrum). It helps lift heavy objects.

a wheel and a rope that changes the direction of the force to lift objects upward

A cone shaped object that has an inclined plane wrapped around it.

A sloped surface that makes it easier to go from one height to another height

Friction is a force that ______ motion.

Friction causes a moving object to slow down or ______.

Friction can also prevent an object at rest from _______.

An unbalanced force can ______ an object's motion.

An unbalanced force acting on a still object could make the object start ______.

An unbalanced force acting on a moving object could make the object__________.

Unbalanced Forces

The more mass an object has, the _____ force is needed to change its speed or direction.

Balanced Forces

The motion of an object will _________ if the forces pushing or pulling the object are balanced.

An object that is sitting still will ______ if the forces acting on it are balanced.

If an object is in motion, it will keep _______ in the same direction and at the same speed if the forces acting on it are balanced.

Work is done when a _______ is applied to an object, and the object moves in the _______ direction as the force.

an example of a pulley

an example of a screw

an example of a wedge

an example of a wheel and axle

an example of a inclined plane

an example of a lever