  This work is devoted to molecular dynamics modeling of collision of
nanoparticle having a small number of degrees of freedom with a structureless
plain. The new regularities are established that determine properties of such
particles. Generalized collision law is obtained where particle properties are
determined by two coefficient, on of which corresponds to restitution
coefficient. The discovered regularity predicts the existence of anomalous mode
of particle reflection from a massive plain. In this mode, velocity of
nanoparticle after reflection from a plain can exceed the initial one. The
criterion of realization of such mode is obtained. Anomalous collision mode was
observed during numerical modeling. Physical mechanism are discussed of
phenomena that are observed during numerical experiments.
