Answer:
10. What is escape velocity?
Escape velocity is the minimum velocity required by an object to escape the Earth's gravitational pull without further propulsion.
An artificial satellite is a human-made object launched into space to revolve around the Earth or another celestial body.
SH ACANYAHURL
12. What are the uses of artificial satellites?
Answer:
Weather forecasting Communication Television broadcasting GPS and navigation Scientific research
13. What is a natural satellite?
Answer:
A natural satellite is a celestial body that revolves around a planet naturally. Example: The Moon is the natural satellite of the Earth.