추력, or "thrust," refers to the force that propels an object forward. It is a key concept in physics and engineering, particularly in the fields of aerospace and mechanics. Thrust is generated by engines, such as those found in airplanes and rockets, and is essential for overcoming resistance, like drag and gravity. The amount of thrust produced depends on various factors, including the design of the engine and the type of fuel used. In rocketry, for example, thrust must be strong enough to lift the vehicle off the ground and into space. Understanding thrust is crucial for the successful operation of any vehicle that relies on propulsion.