An astronaut weighing 209 lbs on Earth is on a mission to the Moon and Mars. (a)

Question

An astronaut weighing 209 lbs on Earth is on a mission to the Moon and Mars. (a) What would he weigh in newtons when he is on the Moon? The acceleration due to gravity on the Moon is one -sixth that on Earth. 154.9 N (b) How much would he weigh in newtons when he is on Mars, when the acceleration due to gravity is 0.38 times that on Earth? 353.2 N (c) What is his mass on Earth? 92.0 kg (d) Which of the following are true? (Select all that apply.) His mass on the Moon is greater than his mass on Earth. His mass on the Moon is smaller than his mass on Earth. His mass on the Moon is exactly equal to his mass on Earth. His mass on Mars is smaller than his mass on Earth. His mass on Mars is greater than his mass on Earth. His mass on Mars is exactly equal to his mass on Earth. Mass is the amount of matter in an object. How does it differ from weight?

Explanation / Answer

a) 257 lbs = 1143.19 N on moon = 1143.19/6 = 190.53 N b) on mars = 1143.19*0.38 = 434.412 N c) His mass on the Moon is exactly equal to his mass on Earth His mass on Mars is exactly equal to his mass on Earth.

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