What distinguishes mass from weight? a. mass is a measure of the amount of matter in an object, while weight is a measure of the force of gravity on the object. b. weight is a measure of the amount of matter in an object, while mass is a measure of the force of gravity on the object. c. mass is a measure of an object's inertial force, and weight is the force exerted by that object on other objects. d. mass and weight are synonyms and ultimately describe the same principle.