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Q: Retardation means an object operates from.....
  • A. fixed velocity
  • B. decreasing velocity
  • C. increasing velocity
  • D. uniform velocity
Correct Answer: Option B - Retardation is rate of decrease of velocity with time. In other words, it is negative acceleration.
B. Retardation is rate of decrease of velocity with time. In other words, it is negative acceleration.

Explanations:

Retardation is rate of decrease of velocity with time. In other words, it is negative acceleration.