Question & Answer » Physics Questions » Why is Pressure a Scalar Quantity

Why is Pressure a Scalar Quantity

Answer: Pressure is defined as the force acting normally on a unit area of the surface of any object. “p” or “P” is the sign for it.

P = F / A

where:

P = pressure,

F = normal force magnitude, and

A = area

We just need to know the magnitude of the component of the force normal to the surface hence, pressure has no defined direction, so it’s a scalar quantity.