Question

Which of the following quantities may remain constant during the motion of an object in a circular path?

• A. Velocity
• B. Speed
• C. Centripetal acceleration
• D. None of these
  

Answer 1

The correct option is B Speed

During motion along a circle, velocity always changes as its direction always changes.

But the magnitude of velocity, which is speed, may remain constant.

In a circular motion, the direction of centripetal acceleration keeps changing, since it is directed towards the centre of the circle.

Hence the correct answer is the option B