Define pressure

Pressure is defined as the amount of force applied perpendicular to the surface of an object per unit area over which that force is distributed. It is calculated using the formula:

$$P = \frac{F}{A}$$

where $P$ is pressure, $F$ is the magnitude of the normal force, and $A$ is the area over which the force is distributed. The SI unit for pressure is the Pascal (Pa), which is equivalent to one Newton per square meter ($\text{N/m}^2$).