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Inhabitants are unaware of the speed of rotation of the planet Earth because 1. the angular velocity is constant for each place on the Earth's surface 2. the atmosphere rotates with the Earth 3. there are no nearby objects, either stationary or moving at a rate different from that of the Earth Which of the above is/are the correct explanation(s)?

Options

  1. A1 only
  2. B1 and 2 only
  3. C2 and 3 only
  4. D1, 2 and 3

Correct answer

D. 1, 2 and 3

Step-by-step solution

Earth spins at a constant speed (i.e., there are no changes in its rotational speed) and we, humans that live on the surface, move along with it at the same speed, which is why we don't feel any direct, physical effects of Earth's spin. That's the same reason why, when we jump in the air, we land in the same (original) spot.

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