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What would be the weight of a 70 kg astronaut on Earth and on the moon?

A. 700 kg on Earth and 700 kg on the moon.
B. 700 kg on Earth and 112 kg on the moon.
C. 700 N on Earth and 112 N on the moon.
D. 700 N on Earth and 700 N on the moon.

Answer :

Final answer:

On Earth, the weight of a 70 kg astronaut is 700 N, while on the moon, it is 112 N.

Explanation:

An astronaut's weight on Earth and on the moon depends on the gravitational acceleration at each location. On Earth, the weight of an object can be found by multiplying its mass by the gravitational acceleration (approximately 9.8 m/s²). So, the weight of a 70 kg astronaut on Earth would be 70 kg x 9.8 m/s² = 686 N. On the moon, where the gravitational acceleration is approximately 1.6 m/s², the weight of the astronaut would be 70 kg x 1.6 m/s² = 112 N.

Therefore, the answer is option c: 700 N on Earth and 112 N on the moon.

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