- What is the gravitational field strength of a planet when the weight of a 100 kg astronaut is 400 N?
a) ¼ N kg-1 b) 9.8 N kg-1 c) 4 N kg-1 d) infinity
- The only natural satellite of the earth complete orbits in about
a) 24 days b) 27.3 days c) 30 days d) 365 1/4 days
- The satellite that revolves in a polar orbit is called
a) Natural Satellite b) Geostationary satellite c) Polar
