WAccelerationWBlock and tackleWBouncing ballWCentrodeWChasles' theorem (kinematics)WCylindrical jointWDual quaternionWInstant centre of rotationWAccelerationWMechanical jointWMonkey and hunterWAircraft principal axesWPrismatic jointWRevolute jointWRotationWScrew axisWScrew theoryWVelocityWVelocity-addition formula