Final answer:
Tension force is measured in Newtons (N), as it is a force, and measured by the standard unit of force in the SI system.
Step-by-step explanation:
Tension force has units of Newtons (N). This is because tension is a force, and the standard unit of force in the International System of Units (SI) is the Newton. An example of a situation involving tension would be a rope pulling on an object with a force that acts along the length of the rope, which could be caused by a person tugging on one end while the object is attached to the other. In physics, this force is calculated based on the magnitude and direction of the pull exerted.