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What is the additional speed required to escape from earth’s GEO? GEO altitude from earth’s surface is 35,786 km. Earth’s radius is 6,378 km.

What is the additional speed required to escape from earth’s GEO? GEO altitude from earth’s surface is 35,786 km. Earth’s radius is 6,378 km. Correct Answer 1.274 km/s

Radius of satellite (r) = 6,378 + 35,786 = 42,164 km Satellite velocity (v) = (μ/r)1/2 = (398,600/42,164)1/2 = 3.0747 km/s Escape velocity = 21/2 v = 21/2 * 3.0747 = 4.3482 km/s Additional velocity (Δv) = 4.3482 – 3.0747 = 1.2735 km/s

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iii) altitude bubble on telescope
iv) altitude bubble on telescope if it is to be used as a level
The correct answer is
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