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      Question

      Which physical quantity remains constant during uniform

      circular motion?  
      A Velocity Correct Answer Incorrect Answer
      B Speed Correct Answer Incorrect Answer
      C Acceleration Correct Answer Incorrect Answer
      D Displacement Correct Answer Incorrect Answer

      Solution

      In uniform circular motion, only speed remains constant.   Velocity changes due to continuous change in direction.   Centripetal acceleration keeps the object moving in a circle.   Examples: Ferris wheel, satellites in orbit.

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