To calculate linear velocity, you need to know the angular velocity ($\omega$) and the radius ($r$) of the rotating object. Linear velocity ($v$) is the speed of a point on the edge of a rotating object as it moves in a straight line. It’s a fundamental concept in rotational dynamics and is used extensively in physics and engineering to analyze and predict the motion of rotating objects, such as wheels, gears, and celestial bodies. The formula to calculate linear velocity from angular velocity and radius is:

Where:

• $v$ is the linear velocity,
• $\omega$ is the angular velocity (in radians per second),
• $r$ is the radius (in meters).