What is the approximate mean velocity with which the Earth moves round the Sun in its orbit?
- A20 km/s
- B30 km/sCorrect
- C40 km/s
- D50 km/s
Explanation
The correct answer is B because the Earth travels at an average orbital speed of approximately 29.8 kilometers per second. This value is calculated by dividing the total distance of Earths orbit around the Sun, which is about 940 million kilometers, by the time it takes to complete one revolution, which is approximately 365.25 days. When converted into seconds, this calculation results in a mean velocity of roughly 30 km/s.
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