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Motion — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceMotion1 Mark
MCQ
When an object is accelerated:
  • A
    Its direction must be constant
  • B
    Its velocity is necessarily changing
  • C
    Its velocity is constant
  • D
    Its speed is necessarily changing
✓

Answer

  1. Its velocity is necessarily changing

Explanation:

Acceleration is the time rate of change of velocity.

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