<Li> Inertial / Non-inertial reference frame </Li> <Li> Mechanics of planar particle motion </Li> <Ul> <Li> Motion (linear) </Li> <Li> Newton's law of universal gravitation </Li> <Li> Newton's laws of motion </Li> <Li> Relative velocity </Li> <Li> Rigid body <Ul> <Li> dynamics </Li> <Li> Euler's equations </Li> </Ul> </Li> <Li> Simple harmonic motion </Li> <Li> Vibration </Li> </Ul> <Li> Motion (linear) </Li>

Average of how fast an object is moving and its direction