A particle is moving in a plane with constant radial velocity 12 m/s and constant angular velocity 2 rad/s. When a particle is at a distance r=8 m from origin what is the magnitude of instantaneous velocity?
I am familiar with angular velocity(ω). But what is meant by radial velocity? Is it the velocity of a body along the radius vector or that along the tangent drawn to the path traversed by the object which is usually perpendicular to radius vector? How can these three terms be related?