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Motion — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceMotion1 Mark
MCQ
In uniform circular motion:
  • A
    Both velocity and speed are constant
  • B
    Speed is constant but velocity changes
  • C
    Both speed and velocity change
  • D
    Velocity is constant but speed changes
✓

Answer

  1. Speed is constant but velocity changes

Explanation:

In a Uniform Circular Motion, the magnitude of velocity, which is speed remains constant.

But the direction of velocity, which is tangential to the circle, keeps changing.

So velocity also changes.

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