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Q: What is the S.I. unit of retardation ?
  • A. ms²
  • B. ms
  • C. ms⁻¹
  • D. ms⁻²
Correct Answer: Option D - The SI unit of retardation is m/s²(meter per second square). Retardation is nothing but it is a negative acceleration that acts in the opposite direction to that of motion.
D. The SI unit of retardation is m/s²(meter per second square). Retardation is nothing but it is a negative acceleration that acts in the opposite direction to that of motion.

Explanations:

The SI unit of retardation is m/s²(meter per second square). Retardation is nothing but it is a negative acceleration that acts in the opposite direction to that of motion.