Non-contact forces are forces that act between two objects that are not physically touching each other.
Example: Magnetic force
Opposite magnetic poles (N - S or S - N) attract each other – but do not need to be in contact.
Like magnetic poles (N - N or S - S) repel each other – but do not need to be in contact.
When forces act between two objects, both objects experience an equal size force, but in opposite directions.
This is Newton's Third Law of Motion.