Here are some examples of contact forces:
* Normal force: The force that a surface exerts on an object that is resting on it, acting perpendicular to the surface.
* Friction: The force that opposes motion between two surfaces in contact.
* Tension: The force that is transmitted through a string, rope, cable, or similar object when it is pulled taut.
* Air resistance: The force that opposes the motion of an object through the air.
* Applied force: A force that is applied to an object by a person or another object.
Contact forces are important in many aspects of our daily lives, from walking to driving to playing sports.
