Question 2
(a) Name two artificial satellites.
(b) A geostationary satellite moves in an orbit of radius 6300km. Calculate the speed with which it moves in the orbit {
= 
}
Observation
This question was unpopular among candidates. Majority of the candidates could neither mention the correct artificial satellites nor calculate the speed of a geostationary satellite.
The expected answer is
(a) Artificial Satellite
- Sputnik - GPS
- Explorer - TERRIER
- Astrosat - MILSTAR
- Skylab - ISS
- GOES
- ANIK
(b) Calculation of Speed
= 458.3 m s-1