Class 11 Physics Practice Test: Gravitation - Escape Speed — Flashcards | Class 11 Physics | FatSkills

Class 11 Physics Practice Test: Gravitation - Escape Speed — Flashcards

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On the surface of the Earth, the escape velocity is about 11.2 km/s, which is approximately 33 times the speed of sound (Mach 33) and several times the muzzle velocity of a rifle bullet (up to 1.7 km/s). However, at 9,000 km altitude in "space", it is slightly less than 7.1 km/s.

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The ratio of the radius of a planet A to that of a planet B is “r”. The ratio of acceleration due to gravity on the planets is “p”. The ratio of escape velocities of the two planets is _____
(pr)1/2
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