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Q: When acceleration is negative, the velocity of a body
  • A. will increase
  • B. will be zero
  • C. will decrease
  • D. will remain fixed
Correct Answer: Option C - The rate of change in velocity of an object is called 'acceleration'. This is a vector quantity. If the velocity of the object decreases with time, the acceleration is negative which is called retardation.
C. The rate of change in velocity of an object is called 'acceleration'. This is a vector quantity. If the velocity of the object decreases with time, the acceleration is negative which is called retardation.

Explanations:

The rate of change in velocity of an object is called 'acceleration'. This is a vector quantity. If the velocity of the object decreases with time, the acceleration is negative which is called retardation.