  # Which of the following is not a vector quantity?

By BYJU'S Exam Prep

Updated on: September 25th, 2023 (a) speed

(b) velocity

(c) displacement

(d) acceleration

Speed is not a vector quantity. The distance covered by an object in a unit of time is referred to as the speed of an object.

### Why Speed is not a Vector Quantity?

Speed is a scalar quantity. It has only magnitude and no direction. The scalar quantity is measured by a single integer and an appropriate unit. Examples of scalar quantity are Volume, Mass, electric current, distance, density, time, etc.

The term “vector quantity” or “vector” is a physical quantity which has magnitude as well as direction. A number with a unit and its direction are used to represent a vector quantity. Examples of vector quantity are velocity, force, momentum, acceleration, etc.

Summary:

## Which of the following is not a vector quantity? (a) speed (b) velocity (c) displacement (d) acceleration

Speed is not a vector quantity. Speed is the rate at which the object moves along a certain path. It has only magnitude hence it is a scalar quantity whereas a vector quantity has both direction and magnitude.

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