A polar vector is one which, gives the position of an object, tells how much and in which direction an object has changed its position, represents rotational effect, has a starting point of application. Explanation: the vector which has a starting point or a point of application is called polar vector. Velocity maybe regarded as polar vector: which of the following acts in accordance with right hand screw rule, polar vector, axial vector, displacement vector, position vector. Explanation: the vectors which represent rotational effect and act along the axis of rotation in accordance with right hand screw rule are called axial vector. Axial vector will have its direction along its axis of rotation depending on its anticlockwise or clockwise rotational effect: what is the magnitude of a unit vector, it has no magnitude, zero, constant but not zero, unity. Explanation: the magnitude of a unit vector is unity. It just gives the direction of a vector.
