An astronaut transports a rock sample with a mass of 3.0 kg from Earth to the Moon. The gravitational field strength on Earth is 10 N/kg, and on the Moon, it is 1.6 N/kg. What are the mass and weight of the rock on the Moon?

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A Mass = 0.48 kg, Weight = 4.8 N
B Mass = 3.0 kg, Weight = 30 N
C Mass = 3.0 kg, Weight = 4.8 N
D Mass = 0.48 kg, Weight = 30 N

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Answer: C. Mass = 3.0 kg, Weight = 4.8 N

Mass is the amount of matter, so it stays 3.0 kg anywhere. Weight depends on gravity: on the Moon, W = 3.0 kg × 1.6 N/kg = 4.8 N.

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An astronaut transports a rock sample with a mass of 3.0 kg from Earth to the Moon. The gravitational field strength on Earth is 10 N/kg, and on the Moon, it is 1.6 N/kg. What are the mass and weight of the rock on the Moon?

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