Concept:A scalar quantity is a physical quantity that has only magnitude and no direction.
Explanation:A scalar quantity is fully described by a single value or size.
It does not require any directional information to be complete.
Mass is the amount of matter contained in an object.
Mass has magnitude only, such as
5 kg, and it has no direction.
For this reason, mass is a scalar quantity.
Tension, weight, and impulse are vector quantities.
Tension is a pulling force that acts along a specific direction.
Weight is the gravitational force acting vertically downward.
Impulse is the product of force and time, and it acts in the direction of the applied force.
Since these three quantities have both magnitude and direction, they cannot be scalar quantities.
Answer:D. Mass