Thrust is the force acting on an object perpendicular to the surface.
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Weight is the force acting vertically downwards due to gravity.
The concepts of net force in a particular direction (thrust) and force per unit area (pressure) help explain these phenomena, as they relate to how force is distributed over an area.
Cutting tools have sharp edges to concentrate the force applied over a smaller area, increasing the pressure and making it easier to cut through materials.
Trucks and motorbuses have much wider tyres to spread their weight over a larger area, reducing the pressure on the road surface and providing better stability and traction.