Question

Question 9
What is the difference between a vector and a scalar?

a
A vector measurement contains a direction and magnitude, a scalar measurement only contains a magnitude
b
A vector is only measured in SI units, where scalars are only measured in US Customary units
c
A vector is only used in measuring forces, a scalar is only used in measuring mass
d
A vector measurement is required for distance, a scalar measurement is required for displacement

Answer 1

The correct answer is:

**a**
A vector measurement contains a direction and magnitude, a scalar measurement only contains a magnitude.

Vectors have both magnitude and direction (e.g., velocity, force), while scalars only have magnitude (e.g., temperature, mass).