Physics · Circular Motion & Momentum

B. Angular velocity is the rotational analog of velocity. The velocity that keeps a body within a circle during circular motion is known as angular velocity. It is directed inwards.

A. The velocity of a body at any instant of time that approaches zero is known as instantaneous velocity.

C. The velocity of a body in circular motion that pulls it away from the circle is known as tangential velocity. Its formula is; Vt = wr. Where omega 'w' is the angular velocity and 'r' is the radius of the circle.

D. The velocity of a body in linear or one dimensional motion is known as linear velocity

a) Instantaneous velocity: Instantaneous velocity refers to the velocity of an object at a specific moment in time. It represents how fast an object is moving and the direction in which it is moving at a particular instant. Instantaneous velocity is a concept used in linear motion. 

b) Rotational velocity: This option is correct. Angular velocity is also called rotational velocity. It refers to the rate of change of angular displacement of an object with respect to time. Angular velocity is used to describe the speed at which an object rotates around an axis or center point. 

c) Tangential velocity: Tangential velocity refers to the velocity of an object at a point on its circular path or trajectory. It represents the speed and direction of an object's motion along its circular path. Tangential velocity is related to angular velocity and linear velocity in the context of circular motion. 

d) Linear velocity: Linear velocity is the velocity of an object in a straight line. It represents the speed and direction of an object's motion along a linear path. Linear velocity is related to angular velocity in the context of circular motion, and it is the tangential velocity of an object moving in a circular path.