Which of the following quanties is NOT a vector quantity?

Work

The correct answer is option 1. Work.

Scalar quantities are those that are described solely by their magnitude, or size. They do not have a direction associated with them. Examples of scalar quantities include time, mass, temperature, and energy.

Vector quantities, on the other hand, have both magnitude and direction. They describe quantities that involve both a size and a direction. Examples of vector quantities include displacement, velocity, acceleration, and force.

Work is a scalar quantity because it is defined as the product of force and displacement, but it does not depend on the direction in which the force is applied. It only considers the magnitude of force and displacement. Therefore, it does not have a direction associated with it, making it a scalar quantity.