CAIE IGCSE Physics 6.1.1.4 Average orbital speed
Practise calculating orbital speed for planets, moons and satellites from circular-orbit models, periods and radius data.
- Syllabus
- 2026–2028
- Course
- Physics 0625
Exam points
- apply v = 2πr/T to Earth, Mars, Moon or satellite orbit data
- convert days or hours into seconds before calculating speed in km/s or m/s
- select the needed orbit radius and period data from a table or multiple-choice row
6.1.1.4—Average orbital speed question 1
Table 9.1 shows data about planets in our solar system.
Table 9.1
The orbit of Venus is approximately circular.
Calculate the average orbital speed v of Venus. Give your answer in km / h.
orbital speed = km/h [3]
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