Question

Which of the following is a scalar quantity?

A. 14 gallons
B. 2 mph down
C. 8 m/s^2 east
D. 8 feet to the right

Answer 1

A. 14 gallons.

Scalar quantities require magnitude to describe them. They do not need direction to be described. 14 gallons is the mass of the gallons which is a scalar quantity.