  We study chaos in the classical limit of the matrix quantum mechanical system
describing D0-brane dynamics. We determine a precise value of the largest
Lyapunov exponent, and, with less precision, calculate the entire spectrum of
Lyapunov exponents. We verify that these approach a smooth limit as $N
\rightarrow \infty$. We show that a classical analog of scrambling occurs with
fast scrambling scaling, $t_* \sim \log S$. These results confirm the
k-locality property of matrix mechanics discussed by Sekino and Susskind.
