  The minimum time required for a quantum system to evolve from an arbitrary
initial state to its orthogonal state is known as the quantum speed limit (QSL)
time. In this work, we consider the model in which a single qubit moves inside
a leaky cavity and then we study the QSL time for this model. Notably, we show
that for both weak and strong coupling regimes, the QSL time increases with
increasing the velocity of the qubit inside the leaky cavity. Moreover, it is
observed that by increasing qubit velocity, the speed of the evolution tends to
a constant value and the system becomes more stable.
