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Motion — Science STD 9 — Question

CBSE BoardEnglish MediumSTD 9ScienceMotion1 Mark
MCQ
Define velocity.State its unit:
  • A
    Velocity is defined as the rate of change of distance of a body with respect to time.Its unit in SI is km/ s.
  • B
    Velocity is defined as the rate of change of displacement of a body with respect to time. Its unit in SI is km/ s.
  • C
    Velocity is defined as the rate of change of distance of a body with respect to time.Its unit in SI is m/ s.
  • D
    Velocity is defined as the rate of change of displacement of a body with respect to time.Its unit in SI is m/ s.
✓

Answer

  1. Velocity is defined as the rate of change of displacement of a body with respect to time.Its unit in SI is m/ s.

Explanation:

Velocity is a vector quantity that refers to the rate at which an object changes its position.

It is a vector expression of the displacement that an object or particle undergoes with respect to time.

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