Question

Velocity is a vector quantity. State whether true or false.
A. True
B. False

Answer 1

In Physics a lot of mathematical quantities are used to explain the concepts clearly. Some examples of these include speed, force, velocity and work. These quantities are often outlined as being a scalar or a vector quantity. A vector quantity is defined as a quantity which depends upon the direction.

Complete answer:
Scalars and vector quantities are differentiated depending upon their definitions. The other method of differentiating the two quantities is by using a notation.
A scalar quantity is a quantity which is fully described by the magnitude only. It is described just by a single number. Examples of scalar quantities are speed, time, volume and mass. The addition of these scalar physical quantities follows the simple rules of the algebra. In these, only their magnitudes are added.
A vector quantity is defined as a physical quantity which has both magnitude and direction. Vector quantities are significant for the study of motion. Some examples of vector quantities are velocity, force, acceleration and momentum.
As we know, speed is a scalar quantity while velocity is a vector quantity. This means velocity specifies speed with a direction. When a body moves with a constant velocity, it signifies that the body moves with a constant speed in a particular direction.
Thus, the given statement that, ‘Velocity is a vector quantity’ is true.

Hence, option (A) is the correct answer.

Note:
In order to solve these kinds of questions keep in mind the basic definitions of the terms like speed and velocity. As we know that the speed of an object or a body shows how fast it is moving. So, when the speed of an object is said to be high it means the object is moving fast. Velocity is defined as the rate of change of position of an object with time in a given direction.