science
Grade-11
Easy

Question

Which of the following is a vector quantity?

  1. Speed
  2. Time
  3. Distance
  4. Acceleration

hintHint:

Vector quantity have both magnitude and direction

The correct answer is: Acceleration


    • Speed is a scalar quantity, having only magnitude and giving no information about direction. For example, 100 m\s is a speed, it tells us how fast an object is traveling, but nothing about in which direction the object is traveling. The vector counterpart to speed is velocity.
    • Time is completely separated from direction; it is a scalar quantity. It has only magnitude, no direction.
    • Distance is a scalar quantity with only magnitude and not a vector quantity. It means that when an object moves, the direction of the object is not considered; only the magnitude of the distance is considered.

    • Acceleration is a vector quantity because it has both magnitude and direction. When an object has a positive acceleration, the acceleration occurs in the same direction as the movement of the object and the opposite is true for negative acceleration.

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