Question

Which of the following are scalar quantities?

• A. Mass
• B. Displacement
• C. Speed
• D. Velocity

Answer 1

Answer: (A), (C)

Speed

The explanation for the correct option(s)

1. Scalars are quantities that can be completely defined by a single magnitude (or numerical value).
2. Example: length, speed, mass work density, etc.

The explanation for the incorrect option(s)

1. Vectors are quantities with both a magnitude and a direction that are completely specified.
2. Example: displacement, force, torque, momentum, acceleration, velocity, displacement, etc.

Hence, option A and C are correct.