Prerequisite(s): PHYS 191 may be taken as prerequisite or corequisite. Serves as a supplement to PHYS 191, providing additional time for problem-solving practice in areas of mechanics: kinematics, forces, momentum, energy, conservation laws, rotation, torque, angular momentum, and gravity. Emphasizes group problem-solving activities. Required for physics majors enrolled in PHYS 191; and optional, but strongly recommended, for all others enrolled in PHYS 191. May be repeated for a maximum of 4 credits.