👉 In physics, a decelerator or decelerating device is an object that slows down (decreases its speed) and reverses its direction. This concept can be applied to various fields such as aerodynamics, propulsion systems, and even in everyday life. For example, in aerodynamics, a decelerator could be used in aircraft to reduce lift and increase drag, thereby improving performance and reducing fuel consumption. Similarly, in the field of propulsion systems, decelerators are commonly used