Here's why:
* Force is a push or pull that can cause a change in an object's motion. The harder an object pushes against a surface, the greater the force it exerts.
* Pressure is force distributed over an area. While it's related to how hard an object pushes, it also considers the area of contact.
* Weight is the force of gravity acting on an object's mass. While weight can influence how hard an object pushes against a surface, it's not the direct measurement of that force.
Therefore, force is the most accurate term to describe the measurement of how hard an object pushes against a surface.
