Jocelynlboyd123
11.12.2020 •
Physics
Quiz 1: Motion graphs, use the position-time graph of the grandfather moving for these questions. will mark brainliest, please help!
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Ответ:
7788.08 m/s
Explanation:
Assuming the orbit of the satellite around the Earth is a circular orbit, we can use the equation of velocity in the case of uniform circular motion:
(1)
Where:
is the velocity of the satellite
is the Universal Gravitational Constant
is the mass of the Earth
is the radius of the orbit, which is the distance from the center of the Earth to the satellite
Substituting the known values in the equation:
(2)
(3) This is the orbital velocity of the satellite
As you may note, this result is not among the given options. In fact, physically these options are not logic if we are talking about the orbit of a satellite around the Earth. This is because the satellite must have a considerable orbital velocity in order to keep orbiting and avoid falling to the Earth surface due to its gravitational field and atmosferic drag (since this is a low orbit satellite, according to the given orbital height).