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An artificial satellite of Earth nears the end of its life due to air resistance. While still in orbit:Group of answer choicesit moves slower as the orbit lowersit moves faster as the orbit lowersit moves faster in the same orbit but with an increasing periodit moves slower in the same orbit but with a decreasing periodit slowly spirals away from Earth

Question

An artificial satellite of Earth nears the end of its life due to air resistance. While still in orbit:Group of answer choicesit moves slower as the orbit lowersit moves faster as the orbit lowersit moves faster in the same orbit but with an increasing periodit moves slower in the same orbit but with a decreasing periodit slowly spirals away from Earth

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Solution

The correct answer is: it moves faster as the orbit lowers.

Here's why:

  1. As an artificial satellite nears the end of its life due to air resistance, it starts to lose altitude and its orbit lowers.

  2. According to Kepler's second law, a satellite moves faster when it is closer to the planet it is orbiting. This is because the gravitational pull is stronger, causing the satellite to move faster to maintain its orbit.

  3. Therefore, as the satellite's orbit lowers and it gets closer to Earth, it moves faster.

This problem has been solved

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