Question

Which of the following is a vector quantity?

• A. Time
• B. Temperature
• C. Distance
• D. Velocity

Answer 1

The correct option is D

Velocity

Vector quantity - A quantity that has both magnitude and direction is called a vector quantity

Scalar quantity - A quantity that has only magnitude and no direction is called a scalar quantity.

Explanation of correct option:

1. Velocity is the rate of change of displacement.
2. Displacement is the change in the position of an object.
3. It has both magnitude and direction.
4. Hence, velocity also has both magnitude and direction.

Explanation of incorrect option(s):

A: Time

Time is a quantity that has no direction. Therefore, it is a scalar quantity.

B: Temperature

Temperature is a quantity that has only magnitude and no direction. Therefore, it is a scalar quantity.

C: Distance

Distance is the path length of an object. Since it is the length of the path, it has only magnitude and no direction.

Therefore, option D is correct.