Earth completes one full rotation of $360^\circ$ on its axis in 24 hours. Through how many degrees of…

Earth completes one full rotation of $360^\circ$ on its axis in 24 hours. Through how many degrees of rotation does Earth turn in 2 hours?
  1. 15 degrees
  2. 30 degrees
  3. 45 degrees
  4. 60 degrees

Solution

Earth turns $360^\circ / 24\text{ hours} = 15^\circ$ per hour. In 2 hours, it turns $15^\circ \times 2 = 30^\circ$.

Asked in: Homi Bhabha Practice

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