Chapter 2, Problem 6A

Give an example of a vector quantity. Give an example of a scalar quantity.

To determine

The examples of a vector and a scalar quantity.

Answer to Problem 6A

Speed is a scalar quantity while velocity is a vector quantity.

Explanation of Solution

Introduction:

A scalar quantity just provides the magnitude however the vector quantity provides both the magnitude as well as direction.

Hence the simplest example of a scalar quantity will be “speed”. While determining the speed, we don’t need the direction of motion of the body. However, if there is a need to define velocity of the object, then we need to mention both its magnitude as well as its direction.

Conclusion:

Hence, speed is the simplest example of a scalar quantity while velocity is an example of a vector quantity.