Which statement about mass and weight is true?

Which statement about mass and weight is true?

• A. Weight changes with gravity
• B. Mass remains constant
• C. Mass remains constant while Weight changes with gravity
• D. Both mass and weight remain constant

Answer: (C)

Mass is the amount of matter in an object, and it stays the same no matter where you are. Weight is the gravitational force pulling on that mass, so it depends on how strong gravity is in that place. The relation W = m × g shows this: if gravity changes, weight changes in proportion, but mass stays constant. For example, a person with a mass of 70 kg weighs about 686 N on Earth (70 × 9.8). On the Moon, where gravity is weaker, that same person would weigh about 112 N (70 × 1.6), while their mass remains 70 kg. Because mass stays constant and weight changes with gravity, the statement that mass remains constant while weight changes with gravity is the true one. The other options are incomplete or incorrect because weight does change with gravity, and weight-only or both-constant statements don’t accurately describe the relationship.

Mass is the amount of matter in an object, and it stays the same no matter where you are. Weight is the gravitational force pulling on that mass, so it depends on how strong gravity is in that place. The relation W = m × g shows this: if gravity changes, weight changes in proportion, but mass stays constant. For example, a person with a mass of 70 kg weighs about 686 N on Earth (70 × 9.8). On the Moon, where gravity is weaker, that same person would weigh about 112 N (70 × 1.6), while their mass remains 70 kg. Because mass stays constant and weight changes with gravity, the statement that mass remains constant while weight changes with gravity is the true one. The other options are incomplete or incorrect because weight does change with gravity, and weight-only or both-constant statements don’t accurately describe the relationship.