Definition of Force: A push or pull exerted on an object, resulting from interaction with another object; it has both magnitude and direction.

Units of Force: Newton (N).

Types of Forces:

Contact Forces: Forces acting through direct physical contact, like muscular force, friction.

Non-Contact Forces: Forces acting without direct contact, like magnetic force, gravitational force.

Balanced and Unbalanced Forces:

Balanced Forces: Equal forces acting in opposite directions, resulting in no change in motion.

Unbalanced Forces: Unequal forces causing a change in an object's motion.

Definition of Pressure: Force acting per unit area.

Formula for Pressure: Pressure = Force / Area (P = F/A)

Unit of Pressure: Pascal (Pa)

Key Points about Pressure:

A smaller area experiences higher pressure for the same force applied.

Liquids and gases exert pressure in all directions, unlike solids which mainly exert downward pressure