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The closer we get to Earth's surface, the stronger the force of Earth's gravity becomes. This force of gravity (measured in Newtons, or N) has a much stronger effect on an individual on Earth's surface than on someone who is thousands of kilometres above Earth's atmosphere. (Note: One kilometre equals 0.6 mile.) Which of the following statements best describes the force of gravity's effect on an astronaut floating more than 30,000 kilometres above Earth's surface?

Gravity's effect

An Astronaut Floating in Earth's Atmosphere

Explanation

The force of Earth's gravity lessens rapidly as an object (for example, an astronaut) gets farther from Earth's centre. This force of gravity is not affected significantly by weather conditions or the astronaut's physical characteristics or occupation.

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