Thrust is a force that propels an object forward. It is generated by the reaction of a system that pushes an object in a specific direction. Pressure is the force applied perpendicular to the surface of an object per unit area. It is calculated as the force divided by the area. Thrust is a force that is generated by the reaction of a system to the application of a pressure. It is a form of momentum, and is the result of pushing a fluid or gas through a nozzle. Pressure is the amount of force applied per unit area. It is measured in units of force per unit area, such as pascals (Pa). The two are related in that a pressure difference between two points in a system will result in a thrust.