1a. What is a satellite? b. State four differences between a natural satellite and an artificial satellite.

c. State four uses of artificial satellites.

Please I need answer urgently.
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A satellite is a moon, planet or machine that orbits a planet or star. For example, Earth is a satellite because it orbits the sunA natural satellite was created by nature, like the moon. The Earth's moon is one example of a natural satellite. Artificial satellites are created by humans, like communications satellites. However artificial satellites are built on Earth and are then taken into orbit by rockets or released by a space station.The uses of artificial satellites are:Communication - The geostationary satellites are used for communication purposes like long distance telephone calls, telex, radio , T.V broadcasts etc.Spying.Weather forecasting.Collecting information about outer planets and outer space.

Is a  vector quantity  that refers to "the rate at which an object changes its position." imagine a person moving rapidly - one step forward and one step back - always returning to the original starting position. while this might result in a frenzy of activity, it would result in a zero velocity. because the person always returns to the original position, the motion would never result in a change in position. since velocity is defined as the rate at which the position changes, this motion results in zero velocity. if a person in motion wishes to maximize their velocity, then that person must make every effort to maximize the amount that they are displaced from their original position. every step must go into moving that person further from where he or she started. for certain, the person should never change directions and begin to return to the starting position.