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(B) In uniform circular motion,the speed of the particle remains constant,but the direction of velocity changes continuously. Since the velocity vecto

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Tangential velocity and radial acceleration

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(B) In uniform circular motion,the speed of the particle remains constant,but the direction of velocity changes continuously. Since the velocity vector is always tangent to the circular path,the particle possesses tangential velocity. Because the direction of the velocity vector changes,there must be an acceleration. In uniform circular motion,this acceleration is directed towards the center of the circle,which is known as radial acceleration (or centripetal acceleration). Since the speed is constant,there is no tangential acceleration. Therefore,the particle has tangential velocity and radial acceleration.

When a particle moves in a uniform circular motion,it has:

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