Forces

A balanced force occurs when two forces acting on an object are equal in size but opposite in direction, resulting in no change in motion.

An unbalanced force occurs when two forces acting on an object are not equal, causing the object to move or change direction.

A force is a push or a pull that can cause an object to move, stop, or change direction.

Friction is a force that resists the motion of two surfaces sliding across one another.

Motion is how an object moves from one place to another.

When balanced forces act on an object, the object does not change its state of motion.

When unbalanced forces act on an object, the object will accelerate in the direction of the greater force.

An example of friction is when you rub your hands together and they get warm.

The direction of a force is the way in which the force is applied, which can affect the motion of an object.

Force causes motion; without a force, an object at rest will stay at rest, and an object in motion will stay in motion.