Describe and give examples with definitions of contact and non-contact forces.

Contact Forces are forces that act on an object by direct physical contact.
Examples include:

• Frictional force: The force that opposes motion when two surfaces slide against each other.
• Normal force: The force exerted by a surface perpendicular to the object resting on it.
• Tension force: The force transmitted through a string, rope, cable, or wire when it is pulled tight by forces acting from opposite ends.
• Applied force: A force directly applied to an object by a person or another object.

Non-Contact Forces are forces that act on an object without direct physical contact.
Examples include:

• Gravitational force: The attractive force between any two objects with mass.
• Magnetic force: The attractive or repulsive force between magnetic poles or moving electric charges.
• Electrostatic force: The attractive or repulsive force between charged objects.