Which of the following is not a vector quantity?

by

(A) Displacement
(B) Acceleration
(C) Speed 
(D) None of these

🧠 Explanation:

  • Vector quantities have both magnitude and direction, like displacement and acceleration.
  • Speed is a scalar quantity because it has magnitude only, no direction.
  • Displacement (distance with direction) and acceleration (rate of change of velocity) are vectors.
  • Therefore, speed is not a vector quantity — it's scalar.