Why, according to Newtonian gravity, do objects move as described by Kepler’s Second Law (that objects move faster when closer to the Sun, and slower when farther from the Sun)?
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As a planet gets closer to the Sun, its inertia causes it to speed up |
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When a planet is closest to the Sun, its mass increase, increasing the force it feels |
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As a planet falls closer to the Sun, the force of attraction increases, speeding up the planet |
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When a planet is farthest from the Sun, the force is greatest, so it moves fastest |
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The distance between a planet and the Sun is always the same |
