Question

Which one of the following is a scalar quantity?

• A. Velocity
• B. Acceleration
• C. Work
• D. Momentum​

Answer 1

The correct option is C

Work

Scalar quantity:

1. A scalar quantity is a physical quantity that has only magnitude and no direction.
2. Such physical quantities can be described solely by their numerical value.
3. The addition of these physical quantities follows simple algebraic rules, and only their magnitudes are added here.
4. Work has only magnitude so it is a scalar quantity.
5. Velocity, Acceleration, and momentum have both direction and magnitude so they are not scalar quantities. They are vector quantities.

Hence, Option(C) is correct.