Physics (Essay) Paper 2 WASSCE (SC), 2021

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