Which of the following is an example of a vector quantity?

• A. $\mathrm{Speed}$
• B. $\mathrm{Velocity}$
• C. $\mathrm{Mass}$
• D. $\mathrm{Temperature}$

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the difference between scalar and vector quantities. Scalars have only magnitude (size), while vectors have both magnitude and direction.
2. Step 2: Analyze each option: Speed is a scalar because it only has magnitude (how fast something is moving) without direction.
3. Step 3: Velocity is a vector because it describes both how fast something is moving and the direction of that movement.
4. Step 4: Mass is a scalar quantity since it only has magnitude (amount of matter) and no direction.
5. Step 5: Temperature is also a scalar because it only has magnitude (how hot or cold something is) without any direction.