We investigate the dynamics of a plastic ball on a vibrated platform in air by
introducing air damping effect into the completely inelastic bouncing ball model. The air
damping gives rise to larger saddle-node bifurcation points and a chaos confirmed by the
largest Lyapunov exponent of a one-dimensional discrete mapping. The calculated
bifurcation point distribution shows that the periodic motion of the ball is suppressed
and a chaos emerges earlier for an increasing air damping. When the reset mechanism and
the linear stability which cause periodic motion of the ball both collapse, the
investigated system is fully chaotic.