You lift a rock and then release it.Identify which of the following is true.The rock falls towards the Earth, and the Earth does not moveThe Earth and rock both move towards each other, but the rock moves furtherThe Earth and rock both move towards each other, but the Earth moves furtherI'm not sure
Question
You lift a rock and then release it.Identify which of the following is true.The rock falls towards the Earth, and the Earth does not moveThe Earth and rock both move towards each other, but the rock moves furtherThe Earth and rock both move towards each other, but the Earth moves furtherI'm not sure
Solution
The Earth and rock both move towards each other, but the rock moves further. This is due to the law of universal gravitation, which states that every particle of matter in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers. However, because the Earth's mass is significantly larger than the rock's, the rock moves much more than the Earth does.
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