1. Contact Force: This occurs when two objects are physically touching.
* Example: A person pushing a box, a bat hitting a baseball, friction between a tire and the road.
2. Non-Contact Force: These forces act on an object even without direct contact.
* Example: Gravity pulling an apple to the ground, a magnet attracting a piece of metal, the electrostatic force between charged objects.
3. Normal Force: This is the force exerted by a surface on an object in contact with it, perpendicular to the surface.
* Example: A book resting on a table, the floor pushing back on a person standing on it.
4. Tension Force: This is the force transmitted through a rope, string, or cable when it's pulled taut.
* Example: A person pulling a wagon with a rope, a weight hanging from a string.
Let me know if you'd like more detail on any of these forces!