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KCET2023PhysicsMotion in Two Dimensions

A particle is in uniform circular motion, related to one complete revolution of the particle, which among the statements is incorrect?

Options

  1. AAverage acceleration of the particle is zero.
  2. BDisplacement of the particle is zero.
  3. CAverage speed of the particle is zero.
  4. DAverage velocity of the particle is zero.

Correct answer

C. Average speed of the particle is zero.

Step-by-step solution

Since, distance travelled by the body is not zero in one complete revolution, hence average speed is not zero. In a circular motion, the displacement of the particle is zero, if it completes one revolution. Therefore average velocity which is ratio of total displacement to the total time taken is also zero.

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