  This paper explores the neutral particle motion and collisional Penrose
process in ergoregion of the braneworld Kerr black hole. We analyze the
properties of event horizon, ergosphere and static limit. The particle
collision in ergoregion via the Penrose process is investigated. Furthermore,
we study the negative energy states and show that the sign of particle energy
can be uniquely determined by the sign of angular momentum. In addition, we
study the Wald inequality to determine the limits of energy extraction via the
Penrose process and also find lower bound of the irreducible mass. The
expression for the efficiency of energy extraction from the brane Kerr black
hole is found. Finally, we compare our results with that obtained from the Kerr
black hole. It is concluded that efficiency increases with the increase of
rotation as well as brane parameter b of the black hole.
