Rotational kinematics is the study of the motion of objects that rotate around a fixed axis. It involves analyzing how angles, angular velocity, and angular acceleration change over time. Just like linear motion, where distance and speed are key concepts, rotational motion uses similar terms but focuses on rotation. Key equations in rotational kinematics relate angular displacement, angular velocity, and angular acceleration. For example, the angular displacement can be calculated using the formula: angular displacement = initial angular velocity × time + 0.5 × angular acceleration × time². Understanding these principles is essential in fields like mechanics and engineering.