1. Contact and non-contact Forces

2. NON -Contact force or at a distance force
Forces
NON -Contact force or at a distance force
Contact force
When two interacting objects are physically touching
When two interacting objects are not touching
Examples
Examples
Fiction
Applied force
Air resistance
Gravity
Magnetic force
Electric force

3. Applied Force: A force typical push or pull, pushing a door open, pulling a rope.
Friction: Happens when two objects rub against each other. Friction opposes motion.
Normal Force: The normal force is the support force exerted upon an object that is in contact with another stable object. For example, if a book is resting upon a surface, then the surface is exerting an upward force upon the book in order to support the weight of the book.
Air Resistance: The air resistance is a type of frictional force that acts upon objects as they travel through the air.

4. NON-Contact Forces
Magnetic Force: A kind of non contact force, materials such as iron, nickel, cobalt and other magnets just need to be near the magnet to be attracted or repelled.
Electric Force: Noncontact force of electrical charges.
Gravitational Force: The force of attraction between any two objects in the universe. All objects have gravitational force. The mass of an object and its distance determines the strength of its gravitational force.