1. The minimum speed required to launch an object so that it remains the same distance above the ground and just falls around th

Question

3 years ago

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1. The minimum speed required to launch an object so that it remains the same distance above the ground and just falls around th

e Earth is called?
a. perigee speed

b. circular satellite velocity

c. Newtonian orbit velocity

d. the Keplerian speed

e. the speed of sound (or Mach 1)

Geography

1 answer:

Agata [3.3K] · Answer 1 · 2022-02-22T17:28:24+03:00

Answer: a. perigee speed

Explanation:

Firstly, we must define what is Perigee and Apogee:

The apogee is the point in an elliptical orbit around the Earth where a body is furthest from the center of it and according to Kepler's 2nd law the speed of a satellite at this point is the lowest.

On the other hand, the perigee is the opposite orbital point. It is where a satellite is closest to Earth and its orbital speed is maximum.

Therefore, if we want to throw an object in such a way that it is orbiting the Earth at the same distance respect to the ground, the minimum speed must be that which is in the perigee.