Question

Which of the following quantities is a scalar?

A. 15 meters northwest
B. 7 meters per second south
C. 20 miles per hour
D. 13 inches to the left

Answer 1

The answer is C

Step-by-step explanation:

Scalar is a quantity that has only magnitude with no directions.

In the options above, option A, B and D show the directions which is Vector quantity.

Answer 2

Option C

Step-by-step explanation:

Scalar quantities are described by its magnitude only. They do not need to be described by the direction. So, 20 miles per hour is the scalar quantity.