Rate of change of displacement is called:

by

(A) Retardation
(B) Velocity
(C) Speed
(D) None of these

🧠 Explanation:

  • Velocity is defined as the rate of change of displacement with respect to time.
  • It is a vector quantity, which means it includes both magnitude and direction.
  • Speed is different because it is the rate of change of distance (not displacement) and is a scalar quantity.
  • Retardation refers to negative acceleration, not related directly to displacement, making velocity the correct answer.