👉 In physics, a jettisonable object is an object that can be released from rest or reduced to a lower speed than its original state. This includes both mechanical and chemical systems. For example, in a rocket engine, a jet engine releases fuel and reduces the pressure of gases so that they are expelled at high speeds. Similarly, in a centrifuge, a centrifugal force is used to reduce the velocity of particles. Jettisonable objects can be useful in various applications, such as