Lecture, two hours; discussion, two hours; outside study, two hours. Requisites: course 91 or Mechanical and Aerospace Engineering 101, Physics 1B. Introduction to fundamentals of dynamics of single particles, system of particles, and rigid bodies. Topics include kinematics and kinetics of particles, work and energy, impulse and momentum, multiparticles systems, kinematics and kinetics of rigid bodies in two- and three-dimensional motions. Letter grading.