Question

You jump from an elevated platform 1 meter above the ground. You fall down since the Earth’s gravity is pulling you down. Are you also pulling upwards on the Earth (Hint: yes, that’s what Newton’s Third Law says!)? Why doesn’t the acceleration of the Earth get noticed, then?

Answer 1

Answer:

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Explanation:

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Answer 2

Answer:

Even the hardest bedrock is somewhat elastic. This means that when you jump, you don't actually exert a force on the entire earth at once. Being elastic, the entire earth does not accelerate all at once away from you when you jump. Instead, you just deform a tiny bit of earth right under your feet.